The Red Paratroopa. Actually I like all of them, except for that Spiked Goomba that jumps out at you at the beginning of Paper Mario. He looked at me the wrong way.
(Yay! 100th post for me! I must talk a lot.)
"Anytime I see something screech across the room and latch onto someone''s neck, and the guy starts screaming and tries to get it off, I have to laugh because, what is that thing?!"- Jack Handey