Disclaimer: I don't Transformers or Kuroshitsuji!

Please R&R!

(For my Friends Star Fata and Ice Fata, who have put up with my lengthy plot explainations for this small one-shot and have watched the anime 'Kuroshitsuji' with me. Ice Fata has even contributed a few sentences of dialogue to this :P

Please remember this doesn't actually follow the Black Butler plot, just has some ideas from the show. Enjoy!)

Prowl had forgotten to mention that he had brothers.

The two tiny, cherubic like, High Demon spawn fluttering around his quarters with shrieks and cries for their big brother's attention certainly rectified that.

"And this was going to be mentioned when?!" he thundered, stamping a pede as the dentaless demon spawn gummed at his audio horns, tiny claws, soft from their recent birth, scrabbled at his helm, the microscopic doorwings defying physics and flapping like a cyber-hummingbirds wings, buzzing as they held the rest of the new born aloft. Prowl had revealed that the annoyance was designated Bluestreak thanks to the clicks, whirls and high pitched shrieks the demon sparkling emitted whenever something wasn't getting gummed in his oral cavity.

"I intended never to let you know any of my otherworldly family, Master." The black and white High Demon said reproachfully, cradling the elder of the demon twins in his arms, the quieter spawn chewing casually on Prowl's sharp claws. "My Spawn Parent requested that I attend them while she performed a more serious contract."

"How does my Contract not qualify as serious?" Jazz growled, swatting at the baby High Demon on his helm horns which flew off with a buzz of flapping doorwings and a shriek of surprise.

"Your Contract is a simple exchange." The disguised High Demon sniffed rolling his azure optics in the flustered Jazz's direction as Bluestreak dive-bombed the Autobot Saboteur, naturally attracted to the mortal's spark that thrummed and beat under the visored mech's chest plates, "Your Spark for the ability to take revenge upon the ones who blew your city to smithereens."

"Speaking of Sparks," Jazz huffed as the silver and red highlighted spawn reattached to his chest plates, almost head butting the saboteur's chest plates in frustration with a whine, "He won't be able to get my spark will he?"

"No." assured Prowl with an almost evil smile, coming forward to push his little brother away from the chest plates that shielded the spark he had branded as his next meal, dropping the elder of the spawn into the air. "Your Spark is mine Jazz." He growled, the azure of his optics narrowing into thin slivers of cobalt on a hellish writhing red background as he casually lifted Jazz's visor from his face revealing the magic seal, unique to every demon displayed in a bright glowing purple flower across one of Jazz's optics and tattooing the surrounding faceplates with an intricate design that was always covered by the blue crystal visor.

Scowling, the saboteur slapped Prowl's servo away, "I'm well aware where my immortal spark will end up thank you."

"Good." The High Demon smirked, leaning in close so that their olfactory sensors were almost brushing, claws stroking at the mortal mech's chest plates with a delicate caress, "I've waited nearly two hundred vorns to dine on your soul, I'm not giving you up easily, my Master."

"I order you to take your servos off me!" Jazz hissed back, standing stiff as Prowl gave him a poisonous glare when the magical seal flared brightly, contrasting with the deep blue of his natural optic. The High Demon backed off, his new demonic brothers fluttering to hide behind him with squeals of submission, both twins peering over a doorwing each to eye Jazz wearily, chirring and chattering to each other. "Stop chancing your luck Prowl."

"Please." Sneered the ancient demon with a toss of his chevroned helm coaxing his brother from clinging to his doorwings, the eldest, Smokescreen chirruping as he landed once more in Prowl's arms, "I honour my contracts to the very last detail, you insult my work ethic."

"Just keep those spawns under control." Jazz sighed, rubbing at his optics before allowing his visor to slide back over them, "I trust you don't want Optimus to find out he has a High Demon as a Second in Command?"

"The only way he could possibly find out is if you supplied him with the information, Master." Prowl smirked, allowing a pointed fang to hang over his lip-plate, growling when Smokescreen gummed his servo a little too harshly, yanking his dented fingers away from the spawnling. "If you would be so kind Master, I request entertainment for my brothers. Paint Pens and slates perhaps? I wouldn't trust them with data-pads and stylus' yet." he enquired, bowing subserviently.

"I'll see what I can do." Jazz grumbled, stalking off into the corridor, leaving his demon to try and get some work done while the twin demon spawn fluttered around his helm causing chaos.

===A few Decaorn Later===

"PROWL!" the voice of a golden frontliner bellowed throughout the base, making every mini-bot cringe and scatter to hide in somewhere a mech of Sunstreaker's size wouldn't reach, less the volatile mech wanted to play Minibot Toss with one of them again.

"Yes Sunstreaker?" the drone like Second in Command replied with a bland monotone, merely offering the sociopath a glance when the infamous Frontline Warrior Twins stormed into his office, Smokescreen and Bluestreak lounging on two comfy chairs, a complex illusion to look like adult mortal mecha coating the young demons that watched the scene with an almost guilty interest.

"Somebot is at it again!" the polish obsessed Sunstreaker growled slamming his palms onto the desk, cracking a data-pad that happened to be in his servo's path. "Look at what they done to my paintwork!"

"I see nothing out of place." The black and white Praxian disguised divine being commented, his gaze flickering between the two peeved looking brothers before him.

"Look!" the yellow mech snapped, grabbing his red and black twin, twisting the prankster so that Prowl could see the demon seal drawn with a brilliant pink paint pen in childish scrawl over Sideswipe's back plating. "Mine is even worse! It's in lime green!"

"I see." Prowl muttered, flicking a demonic slit opticked reproach at his brothers now looking extremely proud of themselves, Bluestreak was even purring, the nerve. "Sit, the both of you." He commanded, waving a servo, two extra seats flying forward and toppling the brothers to their afts, both frontliner's faceplates a startled mask of surprise when he snapped his fingers, the door to the office slamming closed, just as Jazz stepped over the boundary.

"Woah, Prowler." Jazz jumped, startled to find the High Demon, the favourite son of Unicron, this worked up. "Where's the fire?"

"In the Pits, which is where you two will be going back to if you dare to fly or teleport away." Prowl snarled at his little brothers, the spawn twins whimpering, the illusion that the black and white mech had cast on them shattering, revealing the same mechs, only in their tiny cherubic state, both clutching different coloured Paint Pens to themselves.

"What the frag!" Sunstreaker finally voiced, pointing at the cherubic Bluestreak that held the lime green pen, the grey, red highlighted demon fluttering his wings and shooting up into the air to fly around the room, dropping onto the horrified Sunstreaker to gum uselessly at his 'claimed' mech's helm fins, attempting to work out how to extract the golden mech's spark to eat. "What?! How?!" he squawked trying to swat the baby demon away, before he finally settled on, "Get him off me!"

"It seems," Prowl simmered, the aura in the room darkening considerably, the orange walls darkening and fading into black, the High Demon's optics slitting into their true form glowing, even as the rest of him became shrouded in the shadows. "That my new brothers seem to have tried to stake a claim on your sparks."

"Prowl…" Jazz warned darkly, preparing to flip up his visor and order the High Demon to control his kin, using the seal that Prowl had magically branded him with to cement their contract.

"Unfortunately, my darling brothers don't seem to realise that just because it said 'Magic Marker Paint Pens' on the packet, doesn't mean that the Pens themselves are magic!" Prowl ranted to himself as Smokescreen fluttered over to Sideswipe and sat in the disturbed frontliner's lap, sucking on his favourite pink pen.

Jazz dared to laugh as Sunstreaker finally gave up trying to attack the cheerfully cooing Bluestreak, sitting grumpily as the spawn continued to gum his helm fins, crossing his arms grumpily in disgust as Sideswipe finally gathered his wits enough to squeal over how adorable the tiny Smokescreen was, cuddling the surprised demon spawn to his chest plates and declaring that the sparkling could draw on him as much as he liked.

"Well, mechs." He chuckled, flipping up his visor to reveal his brand, Prowl skulking up behind him, the power of the pits radiating off his aura as he muttered about having to ask permission so he could educate his little brothers on the proper way to mark and claim a Spark as their next meal. "How about a story?"