Mr. Gus is a major character in Uncle Grandpa. He protects Uncle Grandpa, he lives with Uncle Grandpa, Pizza Steve, and Giant Realistic Flying Tiger in the RV, he can be very helpful. He is very calm, unlike his friends, and is a very serious character. He is voiced by Kevin Michael Richardson.
Mr. Gus as a human is tall, African American, and has green hair with a goatee. He is muscular and built because he loves to excercise.
He has a deep voice, and it's always monotonous. He usually always has the same expression except for on occasions when he shows emotion. Mr. Gus seems to be smarter then the rest of the crew, and the most level headed, though he is sometimes ignored like in the episode Funny Face when he told UG and Pizza Steve that they shouldn't make funny faces because they "cause alot of pain".
Mr. Gus is also very helpful, and nice despite his appearance. He doesn't mind helping others, and cares about others.
It is shown on numerous occasions that Mr. Gus sees through Pizza Steve's bragging and doesn't believe in it.