Mr. Robinson is a strange looking puppet-like creature. His body is shaped like a slightly rounded cylinder, and in terms of relative height, he only stands a few inches above Gumball . Very light grey fuzz covers his entire body, all except his large and protruding nose, which is pink.
Mr. Robinson wears a fancy looking navy blue vest with a tie and large collar coupled with brown pants. He has large horn-rimmed glasses that help him see with his tiny eyes. He also has a noticable unibrow. When he talks, his mouth opens in typical Muppet fashion.
When Mr. Robinson is yelling, he sometimes is frantically raised in the air in a fit of blind fury.
Mr. Robinson is known for his uptight and grouchy personality. He deeply despises Gumball and can barely tolerate the rest of his family. This is because he considers them to be a tacky and cheap family and views himself and his house as better than the Wattersons'.
He also has a very short temper and can fly into a raging stupor if he's pushed too far. Despite his rough and angry behaviour, Mrs. Robinson isn't intimidated by his anger, and he and his wife share an oddly healthy relationship.
On the inside however, he seems to have an energetic and bold personality, as shown in The Debt .