Could Jim Carrey pull off being Deadpool?

I don't. It's very physical and he's not a young man. His humor also comes from his expressions and mannerisms, whereas Deadpool is all about wit. The Merc with the Mouth.

Jim Carrey I could see playing a live action Freakazoid.

Jim Carrey really is something else. He's so talented. It's no secret he's a little too manic to be everyone's cup of tea. I've seen him do better. I've seen Eternal Sunshine of the Spotless Mind; I can't go back to Dumb and Dumber Jim Carrey after that. I've seen too much.