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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
Jelly Ghost
“The gravity on this planet is all over the place, and it's inhabited by spectral Stretches!”
Stargazer, Super Mario Maker 2

Stretches are a variant of Boos that are attached to solid platforms. They first appear in Super Mario Bros. 3.


Super Mario series[edit]

Super Mario Bros. 3[edit]

Super Mario Bros. 3 promotional artwork: A Stretch
Artwork of a Stretch

In Super Mario Bros. 3 Stretches are only found in World 3-Sprite of Fortress from Super Mario Bros. 3 2 and World 6-Sprite of Fortress from Super Mario Bros. 3 3. Stretches can often be found in groups. If Mario or Luigi tries to pass a Stretch, it rises from the top and bottom of its platform and tries to hit him by moving left to right. Stretches can be defeated only with a Starman or hammers thrown by Hammer Mario.

In World 7-Sprite of Fortress from Super Mario Bros. 3 1, Stretches themselves do not appear, as the entire castle is devoid of enemies aside from Boom Boom. However, the white platforms that would contain them do appear.

Super Mario Maker series[edit]

Stretch in Super Mario Maker.
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 Nintendo 3DS port (verbally referred to as "Boos"), and Super Mario Maker 2. 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 and will teleport to the next platform in its direction once it reaches a platform’s edge. 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]

Extract from "In the Swim! Fun and Sun Fashions"
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."


Perfect Ban Mario Character Daijiten[edit]

種族 ゴースト族
性格 ねばり強い
登場ゲーム 3

Tribe: Ghost clan
Disposition: Steadfast
Game appearances: 3
An obake lurking on the floor
Stretch is a tormenting obake that emerges from the white floor. He moves left and right, blocking Mario's path. Since he cannot be defeated by fire or a tail, watch for an opportunity to run past him.

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!"[2]

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[3]
Derived from「ねちねち」(nechi-nechi, Japanese ideophone for something sticky); officially romanized as "Netchi"[4]
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, sticky) and "쭉쭉" (jjuk-jjuk, stretchy), with Korean noun-deriving suffix "~이" (-i)
Portuguese (NOA) Obustáculo Pun on "obstáculo" (obstacle) and "Bu" (Boo)
Russian Тянучка
Spanish (NOA) Bú estirado Stretched Boo
Spanish (NOE) Boo Estirado Stretched Boo


  1. ^ Shogakukan. 1994.「パーフェクト版 マリオキャラクター大事典」 (Perfect Ban Mario Character Daijiten), page 144.
  2. ^ Super Mario Maker Ghost House Tips. Play Nintendo. Retrieved July 4, 2020.
  3. ^ Super Mario Bros. 3 Japanese instruction booklet, page 40
  4. ^ Super Mario Maker 2 Internal Name (Netchi)