DeMille is the protagonist of the Japanese exclusive Game Boy Advance game, Tomato Adventure. In the game DeMille is an eight year old rabbit who absolutely hates tomatoes. His girlfriend is kidnapped in the beginning of the game and he is required to travel throughout Tomato Kingdom in order to save her. During the duration of the game, he uses weapons called Gimmicks to attack his enemies.
Some were expecting DeMille to appear in Super Smash Bros. Brawl in one form or another due to Masahiro Sakurai including him twice in his character poll. Unfortunately, he never made an appearance outside of Tomato Adventure as of yet.