Board Thread:General Discussion/@comment-26337668-20150430141449/@comment-26066301-20150504002035

TMNTLover4Life wrote: Mybe since the chemical is just in the worm, Shredder eon't even take the risk. Maybe he'll just give it to her directly, something she won't be able to spite out. Actually I just re watched the episode and I noticed that the worms don't normally look freaky, they looked like earthworms at first. So the serum mutates the worms and gives them the mind control ability. So I believe Shredder will control Karai the same way he did with Slash, Rockwell, and Raph.