Big Bullet Bill

Big Bullet Bill is a large variant of Bullet Bill that first appears in both the Wii and Nintendo DS versions of Mario & Sonic at the Olympic Winter Games. Despite being a larger counterpart of a recurring Mario enemy, Big Bullet Bill has not appeared outside the Mario & Sonic series, likely because Banzai Bills are the main larger variant.

Mario & Sonic at the Olympic Winter Games (Wii)
In the Wii version of Mario & Sonic at the Olympic Winter Games, Big Bullet Bill appears as a rival boss. In Single Festival, he is first met in Skeleton, and in Team Festival Big Bullet Bill is first met in Bobsleigh.

Big Bullet Bill is first faced in the Skeleton Bobsleigh event in Festival mode. Since he can fly, he has no need for a bobsled and he can maneuver through the course with ease. If the player loses, Big Bullet Bill will fly proudly towards the sky, soon after Cream proclaims that the match was not fair because Big Bullet Bill could fly. If the player is the winner, Big Bullet Bill will fly away slowly towards and behind the crowd.

The in-game artwork of Big Bullet Bill is a reuse of the Bullet Bill artwork for New Super Mario Bros..

Mario & Sonic at the Olympic Winter Games (Nintendo DS)
In the Nintendo DS version of Mario & Sonic at the Olympic Winter Games, Big Bullet Bill is a boss in Adventure Tours, specifically in Cubyrinth, where he keeps the Snow Spirit Icy imprisoned within a cage, and will only release it if the player's character wins a race against him in Blazing Bobsleigh.