Robber

The character known here as Robber is one of a trio of Imanity thieves who make a brief, unlucky appearance in Disboard's first episode, attempting to rob Sora and Shiro almost the moment the siblings arrive in the new world. Bound like everyone else by the Ten Covenants, the thieves can only take from a victim by beating them in a game rather than by force.

Assuming the newcomers were easy marks — the kind of naive countryside travelers they usually preyed on — the trio challenged them to a game with everything each side owned staked on the outcome, confident of an easy win. They lost decisively and fast, and when one of them asked to at least keep his trousers, Sora refused outright, leaving all three stripped down to their underwear in front of the siblings.

The group resurfaces briefly in a later episode, watching from a distance as Sora delivers his coronation speech, still dressed in little more than underwear and a few leaves for modesty. It's a small, comic beat, but one that sets the tone for how literally Disboard's world takes its own rules: a bet, once made, is honored to the letter, no matter how embarrassing the outcome.