Boo Guy

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This article is about a frequent enemy in the Yoshi series. For information about a similar-looking enemy from Mario vs. Donkey Kong, see here.
Boo Guy
SMW2 Yoshis Island Boo Guy.png
Species Origin Shy Guy/Boo
First Appearance Super Mario World 2: Yoshi's Island (1995)
Latest Appearance Yoshi's New Island (2014)
Ghoul Guy
Glum Reaper
Shy Guy Ghost
Related Species
Shy Guy

A Boo Guy[1] is a type of Shy Guy ghost that first appeared in the game Super Mario World 2: Yoshi's Island. Boo Guys are white and have a wispy tail similar to a Boo. As such, Boo Guys hover rather than walk. As with Shy Guys, Boo Guys move slowly and can be stomped or swallowed by a Yoshi, providing it Yoshi Eggs. They can also spawn from Warp Pipes, similarly to Shy Guys.


Yoshi series[edit]

Super Mario World 2: Yoshi's Island / Yoshi's Island: Super Mario Advance 3[edit]

Boo Guys first appear in Super Mario World 2: Yoshi's Island, first occurring in Bigger Boo's Fort, either wandering or spawning from Warp Pipes. They can follow the Yoshi for short distances. If the Yoshi collides with one, it drops Baby Mario. To defeat them, the Yoshi can stomp on it or swallow it for eggs. If the Boo Guy is spat out, it can roll through several enemies, defeating them.

Shy Guy mace.PNG

In the background of some levels, Boo Guys are seen using harmful traps, including maces. If the Boo Guy sees a Yoshi, it drops the mace. Once the mace hits the ground, the Boo Guy then takes time to lift it to perform its attack again. Also, groups of Boo Guys operate a long, revolving spiked mace, rotating at a constant speed.

In some castles, Boo Guys are stationed in long rows in the ceilings. They relay one bomb, dropping it when a Yoshi approaches them. The Yoshi can perform a Ground Pound to force them to drop the bomb.

Yoshi's Island DS[edit]

Boo Guys reappear in Yoshi's Island DS. Boo Guys remain unchanged, although they are not seen operating machinery nor are they seen relaying bombs.

Yoshi's New Island[edit]

Boo Guys have returned in Yoshi's New Island.

Mario & Luigi series[edit]

Mario & Luigi: Partners in Time[edit]

Partners in Time Enemy
Boo Guy
PiT Boo Guy.gif
A Boo Guy
Location(s) Toadwood Forest
HP 19 (24)
Power 30 (28)
Defense 30 (24)
Speed 27
Experience 8 (10)
Coins 5
Related Ghoul Guy
Notice Stats in parentheses are from the Japanese and European versions of the game if they differ from the original American stats.[2]

Boo Guys appear in Mario & Luigi: Partners in Time. They are found in Toadwood Forest. They attack by rolling into Mario or Luigi. Before they attack, however, they split into two transparent copies: one real, one fake. Only the real Boo Guy can harm Mario or Luigi. The Boo Guy points to the Mario brother prior to attacking. Ghoul Guys, stronger and faster versions of the Boo Guys, appear in Shroob Castle.


Names in other languages[edit]

Language Name Meaning
Japanese ゆーれいヘイホー
Yūrei Heihō[3]
Portmanteau of yurei (Japanese for "ghost") and heihō (Shy Guy's Japanese name)
Spanish Fanto Guy
Boo Guy (Mario & Luigi: Partners in Time)
From fantasma (ghost) and Shy Guy
Boo Guy
French Boo Maskass "Maskass" is the French name of the Shy Guys
German Buu Guy Boo Guy
Italian Tipo Boo Boo Guy


  1. ^ Super Mario World 2: Yoshi's Island Nintendo Player's Guide. Page 126.
  2. ^ TMK Mario & Luigi: Partners in Time Enemy Guide. Some stats were changed from the original American version of the game to the Japanese and European versions.
  3. ^ The Mushroom Kingdom (Accessed on 8-18-09)
  4. ^ The Mushroom Kingdom (Accessed on 2-14-09)