Lenny

Lenny is a Mutant type jellymon that has no evolutions. However, Lenny is one of the strongest jellymons out there, and it is rare to spawn.

Here are some of his moves (thanks hash and axo for the moves aswell.) 30: Mega Drain, Nightmare 30: Poison Sting, Shocking Punch 40: Recover 60: Ye' Ol' Brzap, Brzap

I'd recommend you to buy some JM12 (reinforced jars) for a better efficiency of catching it. Lenny/Big Lenny is a jellymon taken from the jellydex for jellyfishing. In jellyfishing, he can zap you immobilizing you to jellyfish for 30 minutes. The chances of catching it is extremely low, near impossible.