A finger tapped against the page with a sort of boredom, drumming directly next to two photos that sat near the top right corner. One, a regular woman with gold-blonde hair, soaking wet and falling around her pale face with bright green eyes and running black makeup standing out; the other, what appeared to be a diamond figurine of the same woman, right down to the waves of hair falling around her face.

"What's so special about this one?"

"Diamante. No past that anyone knows about. She was found in an illegal laboratory that was experimenting with diamonds and lasers, trying to create the perfect weapon. Instead, they created her: a woman capable of converting her entire body into unbreakable diamond. She's been crushed by buildings, shot with the strongest bullets we've got, and still walked away."

That finger kept tapping at the page, attention focused on the flesh and bone image of the woman. "Wait a minute…is she-"

"They call her their Crown Jewel. The Crown of Gotham."

"You're not only recruiting one of the Joker's girlfriends…but both of them?"

"Unlike the Joker, these two feel emotions. They feel love, for him and for each other. What better way to control them than by threatening the other?"

1.

Crown of Gotham

Harley could hear her sometimes, the echo of her voice only reaching her when certain doors were kept open at the same time. It wasn't often, a rare treat that brought gleefulness to the ex-psychologist. She'd lie on her bed or hang from the bedsheets she'd tied to the top of her cage, humming to the songs she knew or basking in the familiar sound of her lover's voice when she couldn't recognize them. She hadn't seen her since they'd been taken from Mistah J, the two women separated immediately upon their capture.

Today was one of those special days, Diamante's haunting voice singing to her from whatever cell they had thrown her in. Harley hoped she was in better conditions than her, but either way they would get their retribution when Daddy came to get them. He'd be angry just to lose one of his girls, but to have them both taken from him at the same time was going to result in the most wonderful destruction.

Playing with her growing hair, now reaching well past her waist when it was straight, Harley tipped herself back over the sheet-rope she'd made as she began to hum along to what was being sung. Dia was mocking the guards today, it would seem, as the haunting notes of 'London Bridge' echoed to the Queen of Crime's cell.

London Bridge is falling down,

Falling down,

Falling down.

London Bridge is falling down,

My fair lady.

Build it up with silver and gold,

Silver and gold,

Silver and gold.

Build it up with silver and gold,

My fair lady.

Silver and gold will be stolen away,

Stolen away,

Stolen away,

Silver and gold will be stolen away,

My fair lady.

A malicious grin touched Harley's lips as she listened, remembering the last time she had heard that particular song. She'd been singing it, much the same way, as she'd jokingly tossed Harley over her shoulder and dashed away from the Joker, running for their bedroom as Harley cackled, wiggling her fingers to the Joker mockingly. He'd immediately pursued, tackling to two women onto the king bed they all shared in the master bedroom, biting Dia's neck to reprimand her 'theft'. Now, stuck in her cell, the memory just had Harley groaning in sexual frustration and loneliness. She wanted her Mistah J and her Treasure back.

Abruptly, the singing and humming was silenced. There was no booming slam of a door, which caused Harley to immediately drop to the ground. She was accustomed to her singing being cut off when one of the doors closed to block it, but this time it was the woman herself who had stopped. And it had been so sudden. Worry knotted Harley's stomach, but she knew her lover could handle herself.

Dropping to the floor and drawing her knees up to her chest, Harley picked up where the woman had left off.

When she had first spoken to them, Harley and Joker became aware that her birth name had been lost to her; the same event that led to her ability to transform her body into diamond caused her to forget everything about herself. Not even the government knew who she once was, and therefore she was known to them as Jane Doe. Harley had sneered in disgust at the name and declared that they would give her a new name, to celebrate her new life with them.

She was a clean slate for the King and Queen of crime, giving them a new jewel to cut as they pleased.

Joker had been the one to come up with Diamante, the Italian name literally meaning diamond, and Harley had immediately demanded that be her name, gushing about how pretty it sounded. Dia was content with the choice and even gave Harley and Joker each a kiss in thanks. The blonde woman had purred at the other woman's attentions while the Joker had cackled in amusement, both loving the kiss bestowed by the metahuman.

The last time that Harley had seen Dia had been when they were going into the river, Batman behind them with the Joker still madly laughing in the driver's seat. Diamante and Harley had been sharing the passenger seat, Diamante holding Harley in her lap as she laughed into Harley's soft hair. When they'd gone over the edge, Dia had wrapped herself around Harley protectively, her body morphing into diamond and going through the windshield first. She and Harley had both been knocked unconscious, but while she'd remained so Harley had been aware enough to lash out at Batman when he went to haul their half-thrown bodies from the hole in the glass. Diamante's diamond body made it impossible for her to swim, and Harley didn't know how to swim at all.

She wasn't angry with Mr. J for leaving them, he couldn't have gotten them all out of there before Batman arrived. At least if he was still out there, he could get them from this hell-hole. She knew that Dia would understand as well, though she hoped that she was getting along better than her.

She assumed she was. After all, Diamante did have impenetrable skin.

Several hallways from Harley's lonely room, Diamante lay sprawled across the floor with a thin sheen of sweat glistening on her skin. Her muscles twitched as they recovered from the electric shock she had received from the guard outside of her door. Growling to herself as she curled her body in on itself, lying in the fetal position, her nails scratched at the metal flooring as she felt her insides burn with the pain of the shock.

They had sensors built into her entire cell, especially the floor, which picked up on the slightest change in her body; temperature, density, weight. When these changes were sensed, an electric current automatically went through the entire cell to break her concentration and stop her from changing. Usually, when they were set off it was one of the guards manually tripping the sensor, sending volts through the prisoner as they laughed at her shaking body.

There was only so much more of this she could take. Her mind felt like it was beginning to shatter and the deafening silence of the room only made it all worse. The thought almost made her cackle—she had more sanity living with the two most insane people in Gotham than she did in that cell.

When Joker and Harley had blown up the truck initially bringing her to Bell Reve, she'd thought she escaped from their clutches completely. But here she was, years later, back in the shit-hole she'd been destined for the moment she had first become different.

Still lying on the floor, she craned her neck to look up when the slot on her door opened. Instead of the usual perverted man that would stare into her cage, an African-American woman was looking down at her in a mixture of disdain and sick fascination. "Diamante?"

"Well, unless you're at the wrong cell," Dia answered calmly, her words mocking but the tone of her voice entirely serious. "What d'you want?" she continued, rising back up so she was once more sitting on the floor in a cross-leg position. "Come to the freak-show?"

"Yea, you could say that," the woman answered, examining the woman's gold-blonde hair and haunting green eyes. They almost looked…fake. Like someone had cut emeralds and replaced her irises with the precious stones. "So let's see what the performer can do. You've done that, right? Performed?"

"Only when he asks me sweetly," Diamante answered, coy smile coming to her lips as her head tilted to the side. Thinking of the Joker soothed her frayed nerves that the shock had caused, but she refused to entirely let her guard down around this particular woman. There was something dangerous about her. She wasn't a metahuman, but she gave off a much worse aura. She was like a human with no soul.

"I'm not asking you, Diamante. I'm here to see what you can do, and if you decide to decline, I'll let these guys light you up until you're a burned husk on the floor."

One of her eyebrows twitched as she looked to the woman in surprise before she snorted, motioning around herself to the bare room which showed nothing to the naked eye, but this woman had to know the security measure in place. "In case you're unaware, this cell prevents me from doing any…private performances." The jolt she'd gotten a minute before this chick had shown up was enough to tell Dia that the sensors were still working just fine. Rising fluidly to her feet, she approached the door slowly, her eyes now level with the woman's.

"My name is Amanda Waller. I'm here to see what you can do, so they've done the courtesy of turning off the security in your room." Cocking her head to the side, Diamante narrowed her eyes Waller's. Of course, she didn't trust this woman at all. However, she was curious as to why she was suddenly asking for Diamante to use her abilities. In the six months she'd been a prisoner of Bell Reve, they'd never let her use them. When in her diamond form, she was stronger than a normal human, and guns couldn't stop her. If she went full diamond, not even the electric shocks would do anything. There was no flesh left to shock.

"Why? Why are you so interested?" she asked calmly, standing less than a foot away from the door now.

"Because if you impress me enough, I'm going to offer you a deal. One that'll get you out of this Skinner Box."

Blinking in surprise, a grin soon grew across Diamante's face as she shrugged. "Well, if you insist."

Slowly, to test if the grid really was off, she began to morph her body into diamond. The tips of her fingers grew clear and hardened, glittering like freshly cut rock, before it spread. The jumpsuit they had her in covered most of her skin, but Waller's eyes were focused on her face. The long strands of her pale blonde hair changed, her green eyes paling until they looked like luminous diamonds. Inhaling deeply as her head tipped back, hair cascading down her back, Diamante was left with the sensations of ice gripping her entire body.

Morphing had a sensation like ice steadily filling her body, the warmth of human flesh bleeding away. But it felt so good to have the assurance of impenetrable skin again, all of her flesh replaced with the expensive rock.

Sifting her fingers through her hair, she slicked back the long strands along her head before opening her eyes to look at Amanda. In reality, she could change her body instantly for immediate protection, but if this Amanda Waller woman wanted a performance, then she'd get a performance. "Have I passed your test?" Dia teased, splaying her fingers with her arms out in a 'ta'da!' position.

Waller didn't answer, just continuing to look in at her for a moment. She hated when other people looked at her like this. Harley and Joker treated her like a treasure, like a jewel that they had stolen away, but others looked at her like she was a freak. Waller was no different. Only her lovers' eyes on her, in either form, gave her that pleasant shiver from appraisal. Waller's attentions, or that of the guards, made her skin crawl.

"That'll do," Waller answered, stepping away from the doors. "You gunna give us problems or will you change back voluntarily?"

Chuckling, the sound strangely echoed from her chest, Dia continued to smile. "But I've missed this so much," she growled out, before taking off at a run at the door. Waller was pulled aside just before Diamante's body slammed into the thick metal, denting it with the force she'd put into her body, as a metallic sounding laugh broke from her lungs. She could feel the thrum beneath her feet, telling her that they were trying to electrocute her, but it did nothing to her now.

Waller glanced to someone next to her, out of Dia's sights, before she continued. "Change back now, or we'll assign your punishment to Harley Quinn."

The mention of the Queen's name drained all of the rebellious hate out of Diamante. Her grin faded away and her crystalline eyes faded back to the soft emerald, her body moving away from the door. She'd never forgive herself if Harley was hurt by these people because of her. She wanted to be sure that the other woman was alright. As tough as Harley was, the only punishment that either of them took joy or amusement from was the Joker's. These people were probably torturing her woman and that enraged Diamante. She'd never cause Harley unnecessary pain.

Sighing softly, Dia let her body return to normal, leaving herself weak again. She knew that if she tried to change again, she'd be electrocuted as she had been for the past nine months. "Happy?" she demanded, beginning to glare at Waller.

"I'm never happy," was her only response.

She'd been expecting it to happen, considering what she'd just done, but Diamante still shrieked in agony when the grip beneath her feet was tripped. Her feet felt like they were on fire as the electricity travelled up through the soles of her feet, coursing through her body like acid. Collapsing to the ground, Waller watched the woman convulse on the metal floor as the smell of burnt flesh reached her nose.

Sliding the metal slot on the door closed, she turned to let the men guide her to Harley Quinn's cell; Diamante was left lying on the floor, dazedly staring upward as blood and burned skin stained the titanium floor. Now for the other psychopath.

Harley had a fascination with pretty things. She stole things simply because she thought they were pretty, or demanded them because she wanted it because it was sparkly, or shiny. She was much the same when it came to Diamante. She loved the woman's diamond body. It was unique and beautiful, and not what others expected when they looked at her. Her body wasn't rock hard—though she could make it that way—she still felt like warm, human flesh, and her hair was still soft as silk. Harley loved playing with the diamond strands, twisting them in her hands just to watch the usually unforgiving material bend like cloth.

Harley would coax Dia into her diamond form, kissing her warm, crystal lips as her hands pressed against the impossible flesh, feeling over her lover's body.

The Joker's fascination wasn't so much with her being pretty, but instead with her being so uniquely unbreakable. He loved when she changed out of her diamond form, back into the flesh he could bruise and manipulate. He loved that she gave him that surrender, offering up her weakest self for him to do with as he pleased. He wasn't sure whether it was trust or stupidity, but he silently admitted that her surrender endeared her to him.

She was beautiful in both of her forms, but he forbade her from morphing unless he told her to, especially when he was doing business deals. His rivals were much too fascinated with her when they spotted a woman made of diamond playing with Harley, distracting the Queen of Crime while their Daddy worked. He liked to show her off, yes, but only when it was on his terms. He'd have her perched on his lap or dancing at his club, where he could keep others away from her.

Sitting in the booth of his club, The Smile and The Grin, the Joker was watching the two women as they danced inside of the cage on the floor. Gold chains hung around them, the girls twining them around their arms and using them for leverage to allow them to do tricks for the cheering crowd. Harley's blonde hair was bouncing in curls of pink and blue around her shoulders, Diamante's just slightly longer after she'd let it grow, flowing in waves of white-gold. After the jagged cuts from the Bell Reve men had been fixed, Joker had ordered her to grow it out for him; he wanted something to grab.

Like how Harley had a good hold of it at that moment—the women were grinding their hips together, Dia's hands on the Queen of Crime's ass to draw her in closer, while Harley's hands were clutching at their jewel's hair to draw her head back and expose her neck to lips and teeth. Joker knew that Dia would have a love-bite in the hollow of her collarbone when they parted.

The hands leisurely resting on his stylish cane twitched slightly, watching the dresses they were wearing begin to ride up due to their incessant grinding. Diamante whispered something to Harley before they both looked over to where he was sitting, smiling coyly together as they pressed closer with their breasts pressed tightly between them.

"We finally meet."

The new voice almost make him growl in annoyance, but he knew that he needed to keep some semblance of an appearance to people. He knew the idiot offered his hand, but Frost made sure to correct the man's mistake. He took a seat across from Joker, even as the green haired King continued to stare at his girls.

"Hey, J, on behalf of everybody: Welcome back." Harley had slipped behind Dia now, wrapping a gold chain around her lover's throat teasingly, even as Dia trustingly let her, sensually dancing with the gold circling her neck. "I wanted to come by personally and thank you. You're making me good money. I'm making you good money."

Finally, Joker lifted one hand from his cane to lift a hand up, signalling the other man to stop talking, before he spoke and turned his face to the man. "Are you sweet-talking me?" Lifting the hand before his face, the tattoo on the back of it showed a broad smile to replace the one the Joker was hiding. Chuckling deeply, the signature cackle of the Clown Prince sent a shiver down the man's spine. "I love this guy," he said to Frost next, before leaning forward to focus on the mobster. "He's so intense!"

Before more could be said between the two, the cheers from the dancing crowd outside the booth drew their attention back to the cage in which Harley and Dia were dancing. Harley had used her previous gymnast training to lift herself up with the gold chain, the leverage allowing her to hook a leg at Dia's hip and pull the woman in close. Dia, in return, licked up between Harley's breasts and along her neck, nipping at the woman's jaw when she reached it. Her hand was supporting Harley's ass and Harley's stiletto was beginning to pull up on Dia's already short dress, nearly exposing the back of her black lace panties.

"You're a lucky man," the mobster said as he watched them. "You got some bad bitches."

Instantly, the Joker's smile fell as he looked away from his girls. "Oh, that they are," he confirmed, pointing to them for good measure. "The fire in my loins," he began, standing up. "The itch in my crotch!" From where he was sitting, Frost knew immediately that the wrong thing had been said. Joker was beginning to act out, silently enraged at the man's slight against his 'bitches'. "The one, the only, the infamous Harley Quinn!" Harley pretended to shoot Dia in the cage, the other woman using the chain as leverage while she pretended to fall back, dead. The arch of her back proved just how flexible she was as well, breasts thrust out tauntingly. "And my treasured jewel, my little Diamante, the Diamond of Gotham."

Bringing his fingers to his lips, Joker whistled sharply. Immediately, both women looked his way with matching grins, crawling sensually from the cage and making their way through the crowd. Not a glance was spared for anyone else, their eyes solely on their Mr. J.

The mobster quickly downed the last of his drink as the girls pushed aside the beads separating them. Harley perched herself on the ledge fashionably, posing for Joker, while Dia lifted up onto her knees, the milky white of her thighs drawing attention as she used the beads to balance, letting some settle between her breasts.

"Oh, come to Daddy!" the Joker cheered as he watched his two girls jump up, posing sensually for him.

"Puddin'!" Harley greeted excitedly, her stiletto'd foot reaching up to stroke Dia's bare thigh.

"Daddy J," the other blond purred, leaning toward him with lust in her gaze. The dancing she and Harley had been doing clearly made both girls horny, their eyes trained on their Clown Prince.

Joker grinned broadly at each of them, mischief in his gaze. "Listen, you two are my gift to this…hunka hunka!" Turning his back to them for just a moment, he shouted his words to the mobster before calmly slicking his green hair back while turning to Harley, offering her a hand to help her down. "You belong to him now." Guiding Harley over to the man, he noticed Dia's pouting from her kneeled place.

"You don't want us anymore, Daddy J?" she pouted sweetly, reaching for Joker. His large hands grasped her thin sides as he easily lifted her into the booth, her thighs coming to wrap around his hips as her heels caressed his butt.

Leaning in, his cherry-red lips kissed her ear before he whispered to her. "Be a good girl for Daddy, and put on a good show for him."

Dia's pout immediately turned coy and she let her heels touch the ground again, deliberately dragging her hips down over Joker's to press on the hardening bulge in his slacks. He growled lowly to her before she spun away to instead join Harley, who was already sitting in the man's lap. Joker's stare lingered on the definition of her ass through the short dress, just a small nudge all it would need to go up over the firm cheeks.

"You're cute," Harley was saying. Dia was bent at the waist now, resting her chin on Harley's shoulder as she reached around to tease the edge of her dress's plunging neckline, the soft skin of her fingers dancing just inches away from the woman's nipples. "Don't you think so, Baby Jewel?" she purred to Dia, reaching one hand back to caress up the metahuman's thigh, beginning to lift her already short dress.

Dia hummed in agreement as she leaned into Harley's touch, one of her hands moving to cup the man's left cheek which Harley's did the same with the right, together cradling his face in their hands. "You want us?" they purred, leaning in simultaneously. He seemed conflicted on who he wanted to kiss first, both girls offering themselves. "We're all yours," Harley purred before he could actually kiss one of them, lifting herself somewhat higher so he'd have to chase her, Dia's face turning into the woman's neck as her tongue traced up along the tendon there. Dia always loved to taste her King and Queen.

The Joker stood behind them, breathing heavily as he watched his Queen and Crown seduce another man. He felt dizzy with his anger, resisting the urge to rip them off of him. Dia's position wasn't helping, her open-back dress exposing her tattoo to him, the JOKER always temping him to claim what was his.

The mobster picked up on his anger as Harley pulled away from him, giggling at the ticklish feeling of Dia's tongue. Her hand shifted higher on Dia's leg, tracing the edge of her lace panties teasingly.

"I don't want no beef," the man said as he looked away from the girls to Joker.

"You don't want no beef?" Joker repeated, deepening his voice to match with the mobsters. "You don't want no beef?" he asked again, this time in his usual, slightly higher tone. "You don't want no beef?" He was shouting now.

As he was asking again, Harley turned from Dia to the mobster. "Why, what's wrong? You don't like us?"

Dia pouted along with Harley before she wrapped her arms around the other woman, lifting her off of his lap. "Fine, don't waste our time then!"

Sitting down on the couch beneath the window they'd climbed through, Harley now on her lap, Dia turned her electric green eyes over to the Joker, wanting to see what he would do. "These your ladies," the man continued, realizing that he was digging his own grave and desperately trying to save himself.

"Look, are you enjoying yourself?" Joker questioned, seeming to ignore the two girls. Frost could see that he had immediately relaxed once they'd moved away, however. Harley slid off of Dia's lap, sitting next to her, and instead slid her leg over one of Dia's, nearly pressing her knee into the woman's warm crotch. Dia answered by curling her leg over Harley's, knotting the two together as they watched their Daddy prowl the booth, fingers stroking smooth thighs sensually.

"….No…" the man drawled out, trying to think of what the best answer would be to get himself out alive. "Those your ladies, Joker."

"That's right," he confirmed, slicking his hair back again. Then, before the other man could react, he pulled the gun from one of his side holsters and shot him, barely giving the man time to shout out 'J' before his blood and brains splattered across the wall of the booth.

Harley and Dia began giggling from where they watched, Frost watching impassively. Joker turned back to the girls and, one at a time, pulled them into deep kisses that smeared their make-up between the three of them, tongues flicking at their lips as they grasped onto one another. "What do you say we go for a ride?"

"Which kind?" Dia purred, hand gliding up his thigh to trace his erection through his slacks. He growled back to her in answer, leaning into the touch as he bit sharply at her bottom lip.

"That'll be for later, mia Dia; I've got something else in mind."

I watched this movie last week in theaters and I just HAD to write something. There're a few Joker/OC/Harley stories out already, but I'm surprised there aren't more of them!