#subject-5

(Info on Subject-5/Kai below ↓)

Subject-5 (later renamed Kai) is a mutant created and raised by Draxum. He wasn't supposed to be mutated with his brothers- he was meant to be mutated a bit later- but some of the ooze got on S-5 during the destruction of Draxum's lab from Lou Jitsu, and he was accidentally mutated. Splinter didn't see S-5, so he didn't know that he was there, so Subject-5 was found and raised by Draxum.

When the Rise boys discovered Draxum's castle in cannon, Subject-5 ends up running off with them after realizing that they survived. (Mikey quickly renamed Subject-5 to Kai.)

He's 13 yrs and 2 mos old. (He's four months younger than Mikey.) At first, he's 5 ft 0 in, but a while after running away from Draxum and starting to eat more regularly, he grows to be 5 ft 7 in. (Taller than M, L, & D, but shorter than R.)

Draxum often punishes S-5 when he fails to do something correctly or doesn't follow through with an order. Those punishments include: Not getting to eat- depending on how much S-5 screwed up determines how long he'll go without food. Not having access to water for a day or two- not a common punishment. Having a muzzle put on- the muzzle has spikes in it, so any time he goes to talk or make any sound with the muzzle on, the spikes will dig into his scales and start to draw blood. Not being able to sleep at all- not a common punishment. Extra training/barely any time to rest\recover even when injured. Sleeping in a cell used to be a punishment- if he did good, he got to sleep in his room- he now stays in his cell when he is not training, running errands, or at Draxum's side- if he isn't needed, he's in his cell.