Jeff and Erik

Radioactive waste! Dude, that's the best kind of waste there is. My parents only get me medical waste! Jeff and Erik are two Yugopotamians who are Mark Chang's best friends.

Description
Jeff is tall and blue, while Erik is short and pink. Like Mark, they speak in a teenage "surfer dude" type slang and act like typical Earth teenagers. For instance, they call their space journey to Earth a "road trip". Not much is known about them individually, other than they love to eat disgusting stuff like radioactive waste, like any other Yugopotamian.

Trivia

 * Since the episode "Scary Godparents", they have not appeared again. Mark Chang fled Yugopotamia to hide on Earth from Princess Mandie, he did not bring Jeff and Erik with them and they have not been seen in any more episodes, even those focusing on Mark or the Yugopotamians.