Oscar (voiced by Justin Roiland) is a routinely nervous catfish with an afro and Milo's older brother. He is a video game lover and regularly serves as the voice of reason and justice between the main cast. He is often very stressed throughout the series, mostly because of Milo's misadventures and wild behavior. Oscar has had a somewhat-secret crush on Bea until mid-Season 2, where he falls in love with an angelfish named Angela, a gamer girl on a rival debate team, who becomes his girlfriend for the remainder of the season. He is shown as a neat-freak, as well as despite being brothers with Milo, they are the opposite of each other (along with being an entirely different species). For the first season of the series, a clam named Clamantha was Oscar's stalker and regularly followed him in secret, roughly until he met Angela. After Angela spends nearly all of prom playing video games, Oscar accidentally calls her Bea, as well as then subsequently they break up. Now, Oscar returned to his crush on Bea, with Bea harbouring some romantic interests in him as well.