Well then. I guess I stand corrected. I weep for you, Smon.
As for the idea with Fred, I never considered that, but I suppose it makes sense. Fred has absolutely nothing in common, physically or mentally, with Napoleon. The only similarity is the name, really. That would explain why Fred kills Crispin once you leave his mind. With the other characters, when you beat the level, you cure their illness (except for Boyd). With Fred, he actually does exactly what Napoleon would do and the opposite of what "normal" Fred would have done.
See, this is what I'm talking about. A nice thought-provoking conversation about Psychonauts. Beautiful.