The Amazing World of Gumball: The Upgrade/The Signal/The Crew/The Wicked

Gumball and Darwin persuade Bobert to upgrade his operating system, then start to wish they hadn't. / Gumball develops a strange stutter and it makes him accidentally offend Darwin. / Gumball and Darwin attempt to join the baddest crew in town: the senior citizens! / Gumball and Darwin try to find a single nice quality about their neighbour, Mrs Robinson.