Adventure Time Season 10 Episode 12 - Gumbaldia Episode Title:Gumbaldia.Episode Description:As Princess Bubblegum prepares for war with Gumbald, Finn and Jake visit him to prevent the battle. They meet with the Gum Family (who are determined to destroy Bubblegum), but when Finn saves Gumbald from falling they warm to Finn and Jake and sign a peace treaty. Before leaving, Finn and Jake are doused with celebratory juice. When they return to the Candy Kingdom, the juice turns out to be dumdum juice and turns Peppermint Butler into a baby. With no other option, Bubblegum resolves to go to war with her uncle. Gumbald learns about Bubblegum's survival and forms an alliance with past series villains (including a confused Ice King) in preparation for the Gum War, the final battle upon which Ooo's fate depends.