His name is now Dave, his occupations were being a scientist, later he changed it to being a teacher due to an accident he suffered in his legs, now he's a McDonald's worker.
In his first formely occupation he would be a scientist, his former name was Dave Suss Moguss, he broke his legs because of an experiment in a science place he used to work.
He would teach math, specially algebra, in his second occupation being a teacher, His name in there was Dave Algebra Class.