Rob

Rob is the main antagonist and a supporting character in The Amazing World of Gumball. He was originally a minor background student at Elmore Junior High, but once the world became aware of his uselessness, he was sent to the Void. He escaped by holding onto the back of Janice (Mr. Small's van), but was disfigured as a result. Following "The Nobody," he becomes Gumball's arch-nemesis. A tall cyclops with a very slim blue body and a single large eye located in the center of his face with a magenta iris. He had extremely long, skinny limbs, pink hands with visible nails, and a large head. He wore a pair of red short shorts with two light orange stripes on the left side, an orange-sleeved yellow crop-top T-shirt, dark orange shoes with blue laces, and a brown backpack. In addition, he had medium-length auburn hair, which covered part of his face.

In season 2, Rob underwent a minor redesign. He became a 2D character with less detail, and his features became more proportional. He gained a black eyebrow, and his shoes now sported yellow buckles rather than blue laces. A nice, sociable person who would enthusiastically greet any passersby on the street whom he knew, and was also seen conversing and partying with the other students. Although in "The Pony," Gumball and Darwin awkwardly call him the wrong name, make him a hollow promise, and kick him down a manhole, he showed that he can easily forgive by temporarily catching their DVD from the sewers. However, he also demonstrated a sense of entitlement, resentment, and irritability, initially being argumentative because the two forgot who he was.