While often a background character, he has been antagonistic at some points. He was the tertiary antagonist in "The Club", along with Bobert, as part of The Reject Club. He and the other club members planned to embarass Gumball for refusing to join them.
He was the (former) main antagonist of "The Phone" where Gumball yells at him on Darwin's phone, causing him to attack Gumball and Darwin with his webs. He destroys their house, but he was stopped by his mother.
He was also the (former) main antagonist in "The Uncle" when Gumball wanted to be best friends with him only to meet Ocho's uncle Mario. Gumball eventually isn't the person he has in mind, he sing a song of how he doesn't want to be friends with Ocho. Then tells Gumball he has another uncle who is famous: "The Blue Hedgehog that can run fast".x