Romper is a nerdy little alien prince who came to earth because he heard they had cool video games and cool people. He lives in a small apartment in a fairly bustling city, and works at a theme park to earn money to buy sick video games. At work he's quiet, but extremely friendly to guests and co-workers; outside of work, however, he's a bit of a foul mouthed rascal who doesn't know when to shut up.

Aside from video games, he enjoys skateboarding and watching TV, as well as visiting the theme park he works at. He also likes to draw, and listen to vinyl records. His fashion sense is pretty punk, but a lot of times he just gets lazy and wears basketball shorts and band t-shirts. He adores studying astronomy, and even though he is an alien, he's obsessed with all of earth's Cool Alien Merch, and wears/collects a lot of it.