. "Keef Slertner"@en . . "Paul Scheer"@en . "Male"@en . "Keef Slertner"@en . "1"^^ . "Leader of the group KaBOOM!"@en . . . . . . "\"Kaboom\""@en . . "Keef Slertner is the energetic leader of the group KaBOOM! in the episode \"Kaboom\". The episode ends with Keef riding a motorboat, revealing his role in KaBOOM! was an elaborate prank to get the playground built, and announcing he is going to build a hospital in a poor part of China."@en . . "Keef Slertner is the energetic leader of the group KaBOOM! in the episode \"Kaboom\". The episode ends with Keef riding a motorboat, revealing his role in KaBOOM! was an elaborate prank to get the playground built, and announcing he is going to build a hospital in a poor part of China."@en .