Board Thread:Questions and Answers/@comment-24025351-20131108223014/@comment-6028837-20131224170211

i'd say that mutagen man is donnies main enemy seeing as how it's like a whole frankenstiens monster thing, like donnie wants too cure him but mutagen man is now trying to kill the turtles. karai is definatley leo's main enemy, but either way karai is an enemy of all the turtles.