Question: John Kassir and Tom Kenny both voice this one character?
Related documents: [0]  [DOC] "Adventure Time" is an animated short created by Pendleton Ward, as well as the pilot to the Cartoon Network series of the same name. The short follows the adventures of Pen (voiced by Zack Shada), a human boy, and his best friend Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will. In this episode, Pen and Jake have to rescue Princess Bubblegum (voiced by Paige Moss) from the antagonistic Ice King (voiced by John Kassir). [END] 
[1]  [DOC] The Ice King is a character in the American animated television series "Adventure Time". A supposedly evil wizard capable of creating and manipulating ice and snow, he is the self-proclaimed king of the Ice Kingdom, a land of ice he claimed as his own where he lives in the company of many penguins. Although technically an antagonist, he sometimes helps the main characters and is the protagonist of several episodes focusing on his struggles or backstory. The character is voiced by Tom Kenny. [END] 
Answer: 
Ice King
Ice King