Board Thread:General Discussion/@comment-11517363-20130728110317/@comment-251103-20130805214407

If he has a device implanted in his brainstem, then likely Dr. O'Neil  is under Kraang mind control. Perhaps he's a beta test for the coming invasion...after all, why bother with unstable, unpredictable mutants when it's simpler to control someone with a brainchip? It might tie in, too, with the Kraang device April found. If rewired, it might allow the Turtles to ovveride the signal and break Kraang Prime's communication with the mindwiped drones.