The green frog/raptor/whatever runs back and forth, jumps up in the air when he reaches the edge of the floor, and occasionally jumps straight up. If you stand still on a platform and shoot, he will die without you ever being touched. The grey rabbit walks around you, pulls you towards him with green power, jumps around you, and is generally dangerous. Unless you switched around their behaviors with J1CS somehow, which I doubt considering it can't save boss levels.

Where did you hear that about Zoonik? Was it an official source? I like official sources.