[u][b]BEAST[/b][/u]
REBEL
All test subjects know him in this form, and since he very rarely changes into his true form, and keeps his mind closed off, even those with telekenisis aren't aware of this false identity:
[img]http://orig15.deviantart.net/bded/f/2012/343/a/d/shota_rei_by_xaisuu-d5ni4dg.png[/img]
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[img]http://img11.deviantart.net/056b/i/2010/349/5/3/close_up_by_kirairei-d34yukp.png[/img]
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Name: Rei Novak
Age: 25 (appears about 12-13)
Hometown: Appears European. He does not know, he has only ever known the facility.
Side: Rebel
Power: 
Total physical manipulation of himself. In other words, he can morph his body into anything and everything. Whether it be another person as a disguise, or an animal. He is genetically coded with not only thousands of animal DNA, but numerous non-organic coding. As such, for example, he could change his epidermis into steel or carbon fiber if he saw fit to.
Weapon(s): Paws, Jaws, and claws. Knows how to use basic weaponry (knife, handgun) but doesn't typically carry much because he has limited use of them when he morphs.
Bio:
He is the oldest of the subjects currently in the facility, but as he is quite secretive, most of the other subjects think he is the youngest, and he never tells them any different. He mostly keeps to himself, and is frequently seen wearing his headphones and wandering around in cutesy little outfits that some of the female laboratory technicians put him in, which for him, just adds more authenticity to keeping his true age a secret. He doesn't talk much to the other test subjects, preferring to just listen and idle about.

He doesn't necessarily want to lose his powers, he just wants freedom, and this is why he has (or will) join the other teens to rebel and get out of the testing facilities. 

HE IS ENTIRELY MORTAL, and can be killed. He just has the ability to morph into a younger age person, but is by no means 100% immune.

[u][b]DR. LYDIA[/b][/u]
SCIENTIST
[img]http://img-cache.cdn.gaiaonline.com/fedaaa6cf10b3e956ec2da671f9c3f0b/http://i94.photobucket.com/albums/l90/Sabriel_Shinigami/Anime/Blood%20Plus/Julia.jpg[/img]
Name: Dr. Augustine Lydia
Age: 52
Hometown: Unknown, appears to be of British origin.
Side: Scientist, currently a neutral party, but she has been starting to question the morality of her position.
Power: Able to genetically modify humanoids to heighten or alter senses. This 'power' (more of an 'ability') takes time and research.
Weapon(s): Carries two hand gun tranquilizer guns that specifically target the neurons of test subjects, incapacitating any of them which have any genetic modification. Also a small pocket knife, and a badge which grants her full access in and out of the facilities.
Bio:
Since she was little, Augustine has been a fan of toying with things that were not meant to be toyed with, whether that was sewing a frog torso onto a chipmunk or trying to force-breed a feline with a canine, or even just cross two species of plant fungi into a new one, she was always fascinated with her own capabilities and ability to 'play God' essentially.
Through hard work and dedication to a highly controversial field of study, she was recruited to be a scientist at this testing facility. For the first few years there, she was fine, she didn't look twice when experimenting on a child or even a baby. Then she got pregnant after sleeping with the director. Initially cold and unfeeling, she offered her unwanted babe up as a research tool. However, as the pregnancy moved along, her body filling with maternal hormones, and through the agonizing act of giving birth, she found herself attached to the infant, unable to fulfill her bargain of selling the infant to the facility. So, she went to some no name orphanage in Europe and picked out an infant, offering that infant in place of her own. 
Her child was raised outside of the facility, by its grandparents, but she hasn't been the same, heartless and distant woman ever since, and has a special place in her heart for the orphan she saw take her son's place...that orphan...was Rei.