Boo Biscuit

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Boo Biscuit
Icon for the Boo Biscuit in Mario & Luigi: Dream Team
Game sprite of the Boo Biscuit
First appearance Mario & Luigi: Dream Team (2013)
Latest appearance Mario & Luigi: Brothership (2024)
Effect User becomes invisible and invincible for a short time.

Boo Biscuits are an item found in the Mario & Luigi series starting with Mario & Luigi: Dream Team. It is a Boo-shaped cookie item, that will turn Mario, Luigi, Bowser, and Paper Mario invisible when used in battle, rendering them invincible for a short time, similarly to the Repel Gel and Boo's Sheet items from the first two Paper Mario games. It affects all characters at the same time.

Users are unable to take any actions until the effect wears off. Additionally, all counterattacks will not inflict any damage on enemies, including those where the enemy hits itself. This item is useful if the player wants to practice countering enemy attacks, or to complete dodge-focused Expert Challenges. In shops, the Boo Biscuit costs 5 coins.

In Mario & Luigi: Dream Team, Boo Biscuits last for three turns, and cannot be used if one brother is unable to act due to a status effect. The effect ends when the brother who used the item gets the chance to act.

If a Sandoon swallows a brother while a Boo Biscuit is active, it will automatically deactivate, regardless of the remaining turns, and the eaten brother will be liable to taking damage while in the Sandoon. Further, if an enemy runs from battle while a Boo Biscuit is active (i.e. a specimen of the Pi'illo Island variant of Beehoss without any bees left), it will automatically deactivate and the battle will end, regardless of turns remaining, unless there are more enemies in the arena. Using a Boo Biscuit when Pi'illodium prepares to perform a fire wave attack will void the fire wave.

In Mario & Luigi: Paper Jam, using Boo Biscuits in the battle with Nabbit will cause them to immediately wear off and Nabbit to run away. Boo Biscuits are also prohibited in the battle against King Bob-omb, due to it having a timer.

In Mario & Luigi: Brothership, Mario and Luigi no longer become transparent, though they are still invincible during the duration. This is also the only way to dodge the fire waves that the Extension Corps's members use in the final leg of their fight; otherwise, only the Emergency Guard is available for damage reduction.[1]

Names in other languages

Language Name Meaning Notes
Japanese ゴーストクッキー[?]
Gōsuto Kukkī
Ghost Cookie
Dutch Boo-biscuitje[?] (Small) Boo Biscuit
French (NOE) Biscuit Boo[?] Boo Biscuit
German Geisterkeks[?] Ghost Cookie
Italian Biscotto Boo[?] Boo Cookie
Portuguese Bu lacha[?] Pun on "Bu" (Portuguese name for Boo) and bolacha (cookie)
Russian Печенье бу[?]
Pechen'ye bu
Boo cookie
Spanish (NOA) Galleta Boo[?] Boo cookie
Galleta Bú[?] 2013-2017
Spanish (NOE) Galleta Boo[?] Boo cookie

References