Yu Yu Hakusho1992

Yusuke Urameshi:
[to the fighters blocking Dr. Ichigaki] Give me a break! You're still protecting this guy?

Kazuma Kuwabara:
Come on, guys, at least say something. You heard the doctor himself. He doesn't care about...

Dr. Ichigaki:
[laughs] Have you learned nothing yet? Nothing you say can matter. Their old selves aren't in control. As the blood from the veruka enters the subject's skull, the micro-electronics alter their brain's chemistry. Their entire personality is changed. This isn't a simple hypnosis or once-suggested command. I'm talking about a constant voice in their head and, every waking moment, controlling them from the inside. They're not protecting me because I've given the command. Their new brain actually wants to.