Dumont's "Defiant to the End" approach to the guards. After telling Tron and Yori that he's been in the system too long to really believe their plan can work, and that so many "brave plans" failed before, he ends up relenting. While the MCP is putting him through Cold-Blooded Torture, he still has it in him to mouth off to Sark.
Dumont: (in obvious pain) What do you want? I'm busy!
Sark: Busy dying, you worn-out old excuse for a program?
Dumont: Yeah, I'm old. Old enough to remember the MCP when he was just a chess program. He started small, and he'll end small!