"King Gus" is the first segment of the fifth episode of Recess.
King Bob falls ill with tonsillitis, which results in him not being able to lead. To which he appoints Gus as a substitute King of the Playground during his absence. Under Gus' tenure, he enjoys his role as the King although soon tyrannizes the playground as he becomes more forceful for the students and organizes time for students to meet him, including the gang, more so than Bob.
After solving a dispute between two first-grade girls, Gus starts acting more and more like King Bob, even having his temper and bossiness. He even institutes a cookie tax and imprisons all students who refuse or are unable to pay it and anyone who criticizes or even tries to reason with him. Because of this, more and more students are imprisoned which they then realize that Gus has turned into a tyrant. The prisoners escape (courtesy of Mikey) and decide to dethrone him although a battle ensures from the rebels against his guards. It is abruptly cut as Bob has returned, presumably recovered, to regain his rightful place. Subsequently, he regains his royal powers from Gus, leaving him to be a regular student again. The gang quickly forgive him despite his cruel orders to them included among the students of the playground. Then King Bob asks Spinelli to be "Lord Emperor" of the west playground, much to her exhilaration (here we go again).
- The episode's title is a reference to the 1991 film King Ralph.
- The plot is similar to the SpongeBob SquarePants episode "Rule of Dumb" where Patrick is crowned king by a starfish minister and bosses around everyone in Bikini Bottom just like Gus' behavior.