Gus used to be part of a motorcycle gang with Fang, and they thought they could outrun anyone, even the legendary Steppenwolf. However, Steppenwolf overpowered Fang and reminded Gus that being a biker was about freedom rather than causing trouble for fun. He hasn't been proud of his past with Fang since then, despite still owning his motorcycle.
Gus is a tall, burly pear-shaped Cappy who has two tufts of spiky hair and dark gray eyebrows. He wears turquoise overalls with a brown belt and yellow buckles and a dark gray patch on the center of his overalls.
Gus' character is described as rough-hewn, but reserved. He tends to get angry very easily due to his short temper, but he's an otherwise easygoing Cappy. He is also quite fond of sushi, as he was shown to be able to eat more than 250 plates of it in one go in Dedede's Raw Deal. He may look and sound like a rough guy in the dub, but he's actually a rather kind, whole hearted and soft spoken guy.
Gus' name comes from the word "gas," referencing his occupation of running the gas station.
A long time ago, Fang and I were in the same gang. Back then, we thought we were the baddest bikers on the road. Nobody could beat us... not even Steppenwolf! So Fang and me...we challenged him to a race. We figured we'd leave him in the dust, no problem! But we were wrong. Steppenwolf made us look like amateurs! He was the real deal. Fang could see Steppenwolf was gonna win, so he decided to play dirty. But that didn't stop Steppenwolf. He just whipped that old chain right back at Fang! Then he wheeled round and headed straight for me. I thought he was gonna run me down, but then he stopped dead, and just stared at me.”