Here's some clues.. .who am I?

I'm half pound whopper cheese, blue around the two bools in face and caan't lead an elephant toward water. Who am I ? Ok, no, change that. I'm drrrrammmphh BLATZ! Ooops, poop. Ok, change second time. I can't spell so craaampin style. Hooos yer daddy! and, ok, time for medicine. Who am I ?