Yes its true, there is no such thing as a useless character class. But I do match the BB with a support class to help with healing him. A note on the NES version, since the BB does not need to be equipped, he creates alot of extra space to hold those rare pieces of equipment that can be used as items. This allows him to cast HEAL, ICE2, LIT2, FIR2, etc. And makes him more versatile in combat and very useful if your Knights are hogging alot of the equipment slots in your party and you don't want to get rid of anything valuable.