Equestria Ninjas: Gojin

Gojin is a unique teenage mutant, due to the fact that his mutation comes from something other than mutagen. His mother was exposed to nuclear radiation when whe was young, and it carried on into him when he was born. He can transform into a kaiju-like monster with sharp claws, a third arm on his back, black scales, atomic breath, a bony tail, and the ability to fire spinning bladed discs from his chest. Even while in his human form, traces of his monstrous mutant form are present in his human form, such as his saly clawed feet, his blood-red reptilian eyes, and his sharp teeth. He has run an antique shop with his mother for most of his childhood and into his teenage years, wearing a trenchcoat and fedora while out and about to hide his deformities. He is proud of his tattoo of a radiation  symbol over his eye, but not of the scar on his chin from when he was 8, where he fell off his bike into a rat's nest. He first met April, Casey and Collin Macey when he transferred to their school, still in his trenchcoat and fedora. They noticed something afoot when Collin caught a glimpse of his feet in the bathroom. After telling April and Casey, Collin followed him, not knowing that Foot Bots were following them, hoping to find the Turtles's lair. After being attacked, Collin told Gojin to let him handle this, but Gojin refused, and transformed, shredding the Foot Bot's to pieces and scaring Collin in the process. Gojin explained his past, which in turn made Collin tell him about the Turtles and explain Mutagen and the Kraang. Gojin became an ally of the Turtles after being introduced by Collin, and started hangng out with Collin, April and Casey. He later became friends with Karai after she became an ally, and has a very close bond with Collin, calling him brother. 

Note: Though not in the fic series, he does sound decent.

Art Trade 1 of 4 for strikecomment63