A/N: I know, I know. I should go and finish my FrostIron chapter fic…but I just had to write this! I really hope you guys enjoy it.

WARNING!: This is a horror fic, so be prepared for frightening imagery and sequences.

Prologue

A Small Prank

Loki frowned as he pulled what was supposed to be a lacy undergarment from between the cushions of the couch. It looked more like dental floss than anything else. He sighed and rubbed his eyes with the hand not holding the offending material. He balanced the thong on one finger and went to Tony's closed door. He knocked and waited for a few moments before the door swung open. Tony looked up at him with a pencil between his teeth and a quirked eyebrow.

"One of your conquests left you a token," Loki said dropping the thong onto the eraser end of the pencil in Tony's mouth. The shorter brunette pulled the thong from his pencil and examined it.

"I have no idea which one these are from," He said before tossing them into the trash bin inside his room. "Having fun cleaning?" Loki rolled his eyes and leaned against the doorframe.

"Hardly," He said crossing his arms. "You could come out of your little hole and help me if you felt so inclined." Tony threw his head back and laughed.

"Not a chance, Silver Tongue," He said smirking. Loki sneered at the nickname. He pushed away from the doorframe and Tony shut the door to resume whatever project he was working on now. Loki sighed and resumed his cleaning. Tony was the king of making messes while Loki was the king of OCD. One would think that they would be the worst roommates ever, but they worked rather well together. Their friends were thoroughly surprised at just how well they coexisted.

Whenever one of Tony's conquests stayed over, Loki would make them coffee and breakfast before sending them on their way with a charming smile. Sometimes one of Tony's one-nights would come back to have a go with Loki, or one of Loki's would have a swing with Tony. It didn't bother either of them, for they liked the fact that the girls couldn't resist them. Once Loki would send Tony's conquest away he would knock on Tony's door and give him the all-clear. Loki was kind enough to send his own one-night lovers away himself; though it was tense he played it out smoothly.

That wasn't the only way they worked well. Where Loki excelled in Literature and Communications, Tony excelled in Science and Mathematics. Their study sessions consisted of banter and heady arguments that somehow led them to understand each others' subjects. No one understood how they got anything done, but they always did. Sometimes Bruce Banner would join them and that would only add to the fun.

Loki was putting dishes away when he spotted the flashlight on the microwave and an idea came crawling into his head. Sure, it might've been a bit cruel, but he knew it would work thanks to Tony's imagination. He smirked and grabbed the flashlight before moving to knock on Tony's door. IT swung open sooner this time and Loki held up the flashlight. Tony quirked his eyebrow.

"What?" He asked, noticing the sly smirk on his roommate's lips. "Okay. This is going to be good. Come in, sit down and spill." Loki chuckled and walked into Tony's room. He sat down in Tony's desk chair and spun it around to face the bed where Tony plopped down. Tony's room was a mess of dirty clothes and papers.

"You know the tradition of Bloody Mary, correct?" Loki asked. Tony frowned in disappointment.

"Yeah, but I thought you had something better to tell me than that," He said. Loki's smirk widened and he nodded.

"Good. Then you will understand the basics of what I am about to tell you," He said gingerly setting the flashlight down on the desk where both of them can see it. Tony props himself up on his elbows, his interest piqued. "In the game of Bloody Mary you place your hands on the mirror and say her name three times and she will appear. Now, with this little game something else happens. There must be two people in the room-one to hold the flashlight and stand before the mirror, the other to whisper the events that will soon happen." He paused and watched Tony's face, seeing the interest sparking underneath his dark brown eyes. "Would you like to try it?" He asked, holding out the flashlight.

"Sure, why not?" He said sitting up and grabbing the flashlight.

"We will use your bathroom," Loki said standing. Tony nodded and strode into the bathroom with Loki close behind. He flicked on the light only to have Loki flick it back off.

"Hey!" Tony exclaimed going to turn the light back on. Loki grabbed his wrist and shook his head.

"No. That stays off," He said turning Tony to face the mirror. "Now turn on the flashlight and shine it at the mirror." Tony glared into the mirror at Loki. "Tony, you said you wanted to do this." Tony wouldn't admit it, but he was a bit frightened. Looking at mirrors in the dark had always seemed creepy. It was like someone else was looking in at him. "Well?" Loki pressed.

"Okay, okay," Tony said rolling his eyes. He shined the flashlight at the mirror and it illuminated both him and Loki. "Okay, so now what?"

"Put your hand on the mirror," Loki instructed. Tony rolled his eyes again and did as he was told. "Now listen closely." Tony nodded. "Your eyes lock on your reflection and you cannot move. You notice things about yourself changing. Your eyes becoming red with malice. Your hair growing longer and changing to a lighter golden." Tony gulped and tried hard not to rip his hand away from the mirror as he saw the things Loki was saying start to happen to his reflection. "Your reflection begins to grin at you. It tilts its head and moves closer. You can't help but move closer as well." Tony leaned forwards towards his reflection. "Your reflection laughs and says 'Why hello, Anthony.'"

"Fucking shit!" Tony exclaimed, jumping back from the mirror and crashing into Loki. The taller man laughed as he caught him to keep from falling. Tony scrambled for the light switch, turning it on as quickly as he could. He panted as he looked into the mirror, making sure that it was still him reflected there. "Shit! Never again and I letting you talk me into this!" Loki chuckled and shook his head.

"It's just a prank, Tony. Your imagination showed you what I was telling you, that's all," He explained as they left the bathroom. Neither of them noticed the man that slowly appeared in the mirror and turned to watch them.

"Well, well…it's about time I got to play with you, Anthony dear," He said giggling.

A/N: Well…I had fun with this :D The person that appeared in the mirror is Tony's 2P. A 2P is like an evil alter ego that is basically the complete opposite of the original character. I'm not going to go into too much depth with the explanation because that would spoil upcoming events in the story! I just want you to understand the general idea. Anyway! I hope you enjoyed it!