This article is about a/an monster form used by several identities in Kamen Rider Build.

The Stretch Smash (ストレッチスマッシュ Sutoretchi Sumasshu) is a Smash with several different forms and identities.

Known Identities


An unidentified Touto guard was transformed into the Stretch Smash Hazard by Night Rogue. He was freed after being defeated by Kamen Rider Cross-Z. He targeted Misora Isurugi who was caught in the battle against the Kamen Riders, knocking her out before being defeated and restored back to human by Build and Cross-Z combining their finishers. Judging Sento Kiryu!

A Stretch Clone Smash was one of the Clone Smash created by Nariaki Utsumi, based on the original while lacking a human host. Alongside the Press Clone Smash, it was summoned by Blood Stalk to fight Kamen Riders Build and Grease during the battle for the Pandora Box. They were ultimately destroyed by Ryuga Banjo when he used the Cross-Z Magma Knuckle to become Cross-Z Magma. Surging Magma!


Stretch Smash
KRBu-Stretch Smash

Stretch Smash

Appearances: Episode 11

Stretch Smash Hazard
KRBu-Stretch Smash Hazard

Stretch Smash Hazard

Appearances: Episode 15

Stretch Clone Smash
KRBu-Stretch Clone Smash

Stretch Clone Smash

Appearances: Episode 31, 40

Smash Bottle

Stretch Smash Bottle

Smash Bottle
(Stretch Smash)

This Smash Bottle contains the essence of the Stretch Smash.

Behind the Scenes


The original Stretch Smash was portrayed by suit actor Kotaro Kaji (鍜治 洸太朗 Kaji Kōtarō), Stretch Smash Hazard by Naoki Ofuji (大藤 直樹 Ōfuji Naoki), while Stretch Clone Smash is yet to be identified.


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