From Super Walrus Wiki
|First Game Appearance||Walthros|
Mustard first appeared in the Squish Mice comics in 1992/1993. As the largest and toughest of the group, he served as the team strongman. Mustard isn't much of a deep thinker, but is always kind. In the 1996 reboot, the people of his city are being converted into cyborgs against their will. Ketchup helps Mustard break free and save his people.
Super Walrus Man and Woo meet Mustard in Golden Fist City while searching for a way to enter the Silver Shrine. Gaining his cooperation means earning his respect, which Walrus and Woo do by entering a fighting tournament. Mustard, an expert in hand to hand combat, is the final opponent; when defeated, he keeps his promise and aids Walrus and Woo in their quest.
- Like all members of the Squish Mice, Mustard's appearance is based on a stuffed animal.