Domo, the main character, is a brown, furry and oviparous monster with a large, sawtoothed mouth that is locked wide open. His favorite food is nikujaga, a Japanese meat and potato stew. According to a Tokyopop press release of the Domo comic book, Domo "communicates sotto voce with a verve that only his friends can understand." Clint Bickham, the writer of the Domo comic book, said that to him Domo's expression is "a sort of cheery wonderment. Like when a kid wakes to a room full of presents on Christmas day." While Domo's face has variants, to Bickham most of his expressions have "an underlying sense of fascination." Domo is known to pass gas repeatedly when nervous or upset. He also sweats when nervous.