Boo Blah

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Boo Blah
Artwork of two Boo Blahs from Super Mario World 2: Yoshi's Island
First appearance Super Mario World 2: Yoshi's Island (1995)
Latest appearance Yoshi's New Island (2014)
Potted Ghost

A Boo Blah[1] is a kind of ghost that appears in Super Mario World 2: Yoshi's Island, its remake Yoshi's Island: Super Mario Advance 3 and Yoshi's New Island. This creature sticks to the ceiling or the floor and stretches out periodically, similarly to Stretches from Super Mario Bros. 3. They are generally invincible though they only hurt the player if they make contact with them while they are extended. Stomping them stuns them for a brief period of time and by holding the jump button, Yoshi can bounce off them. They can be defeated by using a POW Block or a cloud item. Also, there is an unused variant that has a Piro Dangle on its head, which was used in an earlier build of the game.[2]


Names in other languages[edit]

Language Name Meaning
Japanese びよ~んおばけ[3][4]
Biyo~n Obake
From「びよんびよん」(biyon-biyon, onomatopoeia for stretching) and「お化け」(obake, ghost)


  1. ^ Miller, Kent, and Terry Munson. Super Mario World 2: Yoshi's Island Player's Guide. Page 126.
  2. ^ potatoTeto (July 24, 2020). Twitter post featuring gameplay of a Yoshi's Island prototype. Twitter. Retrieved July 24, 2020.
  3. ^ 「スーパーマリオヨッシーアイランド任天堂公式ガイドブック」 (Super Mario: Yossy Island Nintendo Kōshiki Guidebook), page 7.
  4. ^ 「スーパーマリオアドバンス3任天堂公式ガイドブック」 (Super Mario Advance 3 Nintendo Kōshiki Guidebook), page 20.