# Retro Bullet Bill

Retro Bullet Bill is the subject of a character animation lab for mariowalker.

Character · Fictional · Established

Stable ID: `game-mariowalker-retro-bullet-bill` · Revision 1 · Updated 2026-10-30

Context: [Mariowalker](/field-guide/collections/game-mariowalker/)

[Web page](/field-guide/entities/game-mariowalker-retro-bullet-bill/) · [JSON record](/field-guide/entities/game-mariowalker-retro-bullet-bill/record.json)

## Appearances

- [Retro bullet-bill Lab](/gamelab/projects/mariowalker/character-labs/retro-bullet-bill.html) (context: [Mariowalker](/field-guide/collections/game-mariowalker/))

- [Character Lab](/gamelab/projects/mariowalker/character-labs/): Named in this published page.

## Open questions

- What identity and story details should carry forward from this character lab?

- This source is a crossover experiment. Its borrowed characters do not establish shared canon with Eric’s original worlds.

## Sources

- [Retro bullet-bill Lab](/gamelab/projects/mariowalker/character-labs/retro-bullet-bill.html) (revision sha256:239eaffed5c1dbb4b7e23338cf385de3300c26b964c4c7d29671b6d1b8e3a7e1)

## Portrait

![Retro Bullet Bill in the original game artwork.](/field-guide/assets/portraits/catalog-game-game-mariowalker-retro-bullet-bill-v1-1200.webp)

Authored game sprite, frame bullet-bill-overworld-fly-0. The complete frame silhouette is preserved; transparent margins are removed only for display.

[Download original](/field-guide/assets/portraits/catalog-game-game-mariowalker-retro-bullet-bill-v1.png) · [Mario Walker authored retro enemy atlas](/gamelab/projects/mariowalker/assets/retro/enemies.png) · v1 · SHA-256: `49febead8087dd215e55007761a573a2eae3117861b610238586fe7994c8a14b`