Board Thread:General Discussion/@comment-1255618-20131207105231/@comment-24560714-20140505092128

I don't believe it was entirely because of raph, but going too far by confiscating donny's mutagen was what caused slash to mutate. Most of it was too many accidental and overlooked mistakes by raph. So you could say it was just a freak accident, with raph unintentionally causing it. But because of the very bad accidental combination of his actions, I would say that raph is somewhat innocent because even the turtles overlooked those key actions.