The Ex / The Sorcerer

S5 E113: The Ex: Gumball discovers that Rob, his old nemesis, is "neme-seeing" someone else now. Devastated that Rob has fallen out of hate with him, Gumball refuses to accept that his ex-nemesis has moved on and does his best to sabotage Rob's blossoming relationship with his new foe, Banana Joe. / The Sorcerer: Gumball refuses to accept he is the only kid at school that doesn't have special powers. He convinces Mrs. Jotunheim, Hector's mom, to take him on as his apprentice but she soon learns leaving Gumball unsupervised around magic is a big mistake.