Jeff and Erik fulfill the role of side characters and buddies to Mark Chang in a few episodes. Much like their best friend 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.
Description[]
Jeff is tall and blue, while Erik is short and pink. Jeff also has braces.
Background[]
They first appeared in "Totally Spaced Out", where they help Mark when he returns to Earth and capture Vicky.
Jeff and Erik once again joined Mark in "Scary Godparents", where they journeyed to Earth at a time most dangerous to Yugopotamians; Halloween, surrounded by lethal candy. When Jeff attempted to handle candy, it burnt through his space suit and hand. Mark and his friends were there to rescue Vicky before the Pumpkinator could destroy Earth. They were forced to flee after Timmy "declared war" on them so King Gripullon would bombard Earth with candy. While Mark was despondent about having to leave behind Vicky, Erik cheered him up by pointing out he could have a clone of her made.
Since the episode, "Scary Godparents", they haven't had a speaking role. Mark Chang fled to Earth to hide from Princess Mandie in "New Squid in Town!", and lived there for the rest of the series. Their last appearance in general was a cameo in "What's The Difference?", in a picture with Princess Mandie. They have not been seen in any more episodes, even those focusing on Mark or the Yugopotamians.
