The Best Episodes Written By Tom Meltzer

When Miss Simian sees Gumball and Darwin joyful on Monday, she knows that something is wrong with them. She performs tests on them, but the nurse disapproves what she's doing. But suddenly, Gumball and Darwin start to infect the school with the 'Joy Virus', and it's up to Miss Simian and her tape player to cure the students.

When Mom reveals that Gumball's real name is "Zach," Gumball adopts a cheesy, annoying persona to match the name. His family tries to make him remember the old Gumball, as this new Zach persona is progressively taking over Gumball's life and erasing his memories.