Lemmy is the oddball of the Koopalings, and by oddball, I mean he is certifiably insane, so he requires medication to function properly. Otherwise, he flies completely off the handle, often screaming and laughing psychotically.

For Lemmy's voice, I want someone who can handle a character who tends to scream and laugh like a maniac, but when he's calm, he speaks more quietly and casually A reference that sounds close to what I'm looking for is Slappy from Dead Rising 2: https://www.youtube.com/watch?v=bzOE1Cl5w4A