Example...In MCC where he's the underdog character and doesn't even show much emotion other than being extremely grateful for Scrooge's tyranny and refusal to pay what he was worth, like Bob Cratchit should be. Other than being the authority figure and that one outburst of "WHO HIRED THIS CREW?!?" in MTi, he seemed really tame. Kermit's a gentile soul, but when he gets frustrated, he tends to flip out... like this Sesame Street clip will show http://www.youtube.com/watch?v=SfXm5qFZnXQ It's a slow burn, sure. He starts of friendly, gently trying to correct a mistake, and ends up shouting at the store owner and the customers. He even says "TAKE YOUR T-SHIRT AND GET OUT!!" at one point.