Adventure Time Season 6 Episode 11 Little Brother Episode Title:Little Brother.Episode Description:While throwing a party in Jake's Viola, Shelby (voiced by Ward) accidentally cuts his lower half off, which becomes sentient. Shelby names his new brother Kent (voiced by Thurop Van Orman), and seeks Jake's help in order to be a good sibling. Jake tells Shelby to give Kent a sword and have him fight bad guys, which Shelby does. Kent journeys into the roots of the treehouse and encounters the Rat King (voiced by James Urbaniak), whom he eagerly challenges. Kent is knocked out and his sword is destroyed, but he is found by an inhabitant of the roots named Leaf-Beard (voiced by Urbaniak) who explains that his village has been tormented by the Rat King for some time. Kent acquires three materials, gets a new sword forged by a local blacksmith (voiced by Burch), and squares off against the Rat King, defeating him.