1. I think he's great. Most people just spam his charge and drill slam attacks, and give up on him and call him a bad character just because they don't know how to use him.
2. Play some offline before going online to get some practice. --- Jumping Flash!'s Robbit needs to be in Playstation All-Stars as DLC! Sign the petition for him here: http://www.petitionbuzz.com/petitions/robbitfirstallstar