Board Thread:General Discussion/@comment-26184563-20130421015649/@comment-26062541-20160429033339

Technically Slash is half tortoise half mutant turtle/human hybrid(might explain why he was so unbalanced in his first outing) but yes the turtles in this are half human, it runs on 87 rules. If they didn't have a different DNA strain to compliment their mutation, they'd end up mutating with their inner bacteria like the Squirrelanoids.

Think of this universe's mutagen as a hypervolatile lactic acid, upon touching a subject it "Digests" it causing a complete molecular break down. Once the mutagen evaporates, the cells of the living host then combine with any stray bacteria they were last in contact with, which unless treated can create an INFINITE ammount of DNA combinations. In the turtles case, it was either Splinter's DNA, or the shop-keepers of the Pet stores. Otherwise their mutation would've caused them to go similar to the Squirrelnoids or Speed-Demon.