Sleepy Boo

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Sleepy Boo
Model of the Sleepy Boo enemy in Super Mario Sunshine.
Model from Super Mario Sunshine
First appearance Super Mario Sunshine (2002)
Latest appearance Super Mario 3D All-Stars (2020)
Variant of Big Boo

Sleepy Boos,[1] also known as Giant Boos[2] or Big Boos,[3][4] are Big Boos that appear in Super Mario Sunshine. During Episode 3 of Sirena Beach, Mysterious Hotel Delfino, Mario encounters them in Hotel Delfino.

Sleepy Boos are stationed in various passages; most of the Sleepy Boos appear in the hotel's attic, and one is also located on the second floor of the hotel, blocking the sole passage between two rooms. There is no room to pass or jump over them, and FLUDD has no effect. Though they do not wake up in response to anything, they will do one point of damage to Mario if he makes contact. The only way to defeat a Sleepy Boo and clear the way is for Yoshi to eat it.

If Mario is riding on Yoshi's back and runs into a Sleepy Boo, he will take be flung off the Yoshi as usual; however, it is very hard for Mario to mount the Yoshi again afterward, as he will still be too close to the Sleepy Boo and Mario will very likely be knocked off again.


Names in other languages[edit]

Language Name Meaning
Japanese デブテレサ[5]
Debu Teresa
Fat Boo
French Gros Boo[6] Fat Boo
German Schlafender Buu Huu Sleeping Boo
Italian Boo Assonnato[7]
Boo dormiglione[8]
Sleepy Boo
Sleepyhead Boo


  1. ^ Hodgson, David S J, Bryan Stratton, and Stephen Stratton. Super Mario Sunshine Prima's Official Strategy Guide. Page 20.
  2. ^ Loe, Casey. Super Mario Sunshine Perfect Guide. Page 76.
  3. ^ Loe, Casey. Super Mario Sunshine Perfect Guide. Page 81.
  4. ^ English Super Mario Sunshine entry on the official Mario Portal. Retrieved August 13, 2022. (Archived on August 13, 2022, 22:22:41 UTC via
  5. ^ Shogakukan. 「スーパーマリオサンシャイン任天堂公式ガイドブック」 (Super Mario Sunshine Nintendo Kōshiki Guidebook). Page 20.
  6. ^ Super Mario Encyclopedia, pag. 99
  7. ^ Prima Guide; pag. 20
  8. ^ Super Mario Bros. Enciclopedia; pag 99