The Yak in the Sak is the main villain of The Angry Beavers episode of the same name. He is a magical, rhyming Yak intent on making games "nice, safe and fair". He, along with the entire episode, is a parody of various Dr. Suess works, mainly "The Cat in the Hat". He is voiced by John de Lancie, who also plays villains Q from Star Trek, Mister Twister in Young Justice, and Discord from the Friendship is Magic series.