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This article is about the type of Boo that first appeared in Super Mario Bros. 3. For the type of Shy Guy that appears in Yoshi's Island, see Stretch (Shy Guy). For the microgame from WarioWare: Smooth Moves, see S-T-R-E-T-C-H!.
A Stretch in Super Mario Run.
In-game artwork of a Stretch from Super Mario Run
First appearance Super Mario Bros. 3 (1988)
Latest appearance Super Mario Maker 2 (2019)
Variant of Boo
Boo Blah
“The gravity on this planet is all over the place, and it's inhabited by spectral Stretches!”
Rosalina, Super Mario Maker 2

Stretches are Boos attached to solid platforms that first appeared in Super Mario Bros. 3.


Super Mario series[edit]

Super Mario Bros. 3[edit]

Artwork of a Stretch

Stretches first appeared in Super Mario Bros. 3 and its respective remakes. They are found exclusively in fortresses, first appearing in World 3-The Fortress map icon. 2, and are more of an obstacle than an enemy. If the player attempts passing them, it will rise from the top and bottom of the platform and attempt to hit them by moving left to right. Stretches are often found in groups. Stretches can only be defeated with a Starman or hammers thrown by the Hammer form.

Super Mario Maker series[edit]

In-game screenshot of Stretches
SMM, SMB style
SMM, SMB3 style
SMM, SMW style

After a long absence, Stretches reappear in Super Mario Maker, its 3DS port (verbally referred to as "Boos"), and its Nintendo Switch sequel. In the course editor, a Boo will automatically become a Stretch if it is placed on top of or just below a solid block. In this game, they can be placed on any surface, and will pop up more periodically, making them more of an enemy than in their original appearance from Super Mario Bros. 3. Their appearance is slightly different, and they are not connected to a white platform anymore. New sprites for Stretches have been made in all styles. However, they cannot accept Super Mushrooms as attempting to give them a Super Mushroom will turn the Stretch into a Big Boo rather than bigger Stretches, and giving them wings will make them faster. Stretches can be defeated in Super Mario Maker like normal Boos, with either a Super Star or a Goomba's Shoe.

SMM2, SMB style
SMM2, SMB3 style
SMM2, SMW style

In Super Mario Maker 2, Stretches stop moving when looked at in the nighttime ground theme.

Super Mario Run[edit]


Stretches reappear in Super Mario Run, where they are usually found in Ghost Houses and act like they did in Super Mario Maker. They have the same appearance as the Stretches in the New Super Mario Bros. U style from Super Mario Maker.

Nintendo Comics System[edit]

A Stretch, as depicted in the Nintendo Comics System

A single Stretch appears in the Nintendo Comics System short "In the Swim! Fun and Sun Fashions" in an advertisement for swimwear, which depicts it lifting weights on a beach. The Stretch, which has only one face, is shaped like a "Z."


Super Mario Maker[edit]

  • Play Nintendo: "Creepy crawliesDrag a Boo to the ground and watch it transform into a Stretch, a crawling menace that pops out of nowhere to give you a scare. You can even hang them from the ceiling!"[1]

Super Mario Run[edit]

  • Notebook bio: "This ghost really likes sticking to blocks, suddenly appearing and disappearing as it moves randomly."


Names in other languages[edit]

Language Name Meaning
Japanese ネッチー[2]
Likely derived from「ネチネチ」(nechi-nechi, sticky)
Chinese (Simplified) 拉伸幽灵
Lāshēn Yōulíng
Stretched Ghost
Chinese (Traditional) 拉伸幽靈
Lāshēn Yōulíng
Stretched Ghost
Dutch Stretch -
French Flexcible Pun on flexible
German Buu-Laken Boo Sheet
Italian Piattaforma Boo
Stretch (Super Mario All-Stars Limited Edition instruction booklet)
Boo (on a) Platform
Korean 네치 (Super Mario All-Stars)
끈쭈기 (Super Mario Run)
Transliterated from the Japanese name.

Possibly originated from 끈적끈적 kkeunjeok-kkeunjeok meaning sticky and 쭉쭉 jjuk-jjuk meaning stretchy
Portuguese (NOA) Obustáculo From obstáculo (obstacle) and Bu (Boo)
Russian Тянучка
Spanish (NOA) Bú estirado Stretched Boo
Spanish (NOE) Boo Estirado Stretched Boo


  1. ^ Super Mario Maker Ghost House Tips. Play Nintendo. Retrieved July 4, 2020.
  2. ^ Super Mario Bros. 3 Japanese instruction booklet, page 40