This article is about a/an structure in Kamen Rider Build.
This article needs to be updated.

Pandora Tower's completion by Evolto...

These omissions are so great that the article's factual accuracy has been compromised. Check out the discussion page and revision history for further clues about what needs to be updated in this article.

Japan after the Sky Wall and its three divided districts: Hokuto (blue), Seito (orange), and Touto (green).

Lower stretch of Sky Wall

Build driving atop Sky Wall

The Sky Wall (スカイウォール Sukai Wōru) was a mysterious structure that consisted of three branches of a stone-like wall seemingly hundreds of feet high and bearing carved spiral patterns. A red energy screen is projected from a gap between the two sides of the wall and extends higher still above it, being capable of destroying anything that tries passing through. It served as the border between the three districts its appearance divided Japan into: Hokuto, Seito, and Touto.

The Sky Wall is not impenetrable, however, as several small openings exist along its length that allow passage. Between Touto and Seito there exists at least one low point in a harbor to allow smuggler ships to pass between the two districts. Borderline of Justice Between Touto and Hokuto are several cracks or tunnels through the wall at or just below ground level; at least one is a roadway with a government checkpoint, but one previously unknown to the governments was known as the Sky Road (スカイロード Sukai Rōdo). The Devil's Scientist Any gaps between Seito and Hokuto are currently unknown.

Areas along the base of the Sky Wall also emit Nebula Gas, leading Faust to establish at least one of its bases underground next to the Wall. Moonsault of Anger


Main article: Sky Wall Disaster

Sky Wall's materialization begins.

The Sky Wall sprung pre-constructed from the ground 10 years ago in 2007 after the Pandora Box was activated. Its materialization caused several people in proximity of it to float helplessly into the air to thier deaths and for the entire country of Japan to be split into three parts. Everyone present at the event was noted by Director Gentoku Himuro to have suddenly changed their personalities to be much more aggressive.

Based on events 10 years later, it seemingly could not be destroyed or torn down as the Pandora Box that is powering it generates an enormous amount of an unknown alien energy far greater than any atomic energy source on Earth.

With the nation divided, several foreign powers have tried to take advantage of the disarray of Japan and claim parts of the nation through imperialistic influence, though the "vultures", as they are called by Director Himuro, are being kept at bay for now as none of the districts have any interest in allying or being influenced by any other nation.

The first phase of Pandora Tower.

With a full set of Full Bottles attached to a panel and activated on one end of the Pandora Box, part of the Sky Wall transformed itself into the first level of the Pandora Tower (パンドラタワー Pandora Tawā), which is said to be capable of wiping out all of humanity should the tower be completed. The Opening Bell Rings. Said tower was completed on Mars, which apparently had completed its deed.

Pandora Tower's completion

The Sky Wall breaks and crumbles apart as reality shifts

The Tower was completed and a great battle ensued to ensure that Evolto did not gain the means to destroy the world. Despite some very close calls, Sento and his friends managed to stop Evolto by using the tower, Pandora Box and the Genius Fullbottle to merge their reality with the World of Kamen Rider. This erased the Sky Wall from existence along with the Pandora Box as Evolto never existed in this world.

Behind the scenes

The appearance of the Sky Wall explicitly sets Kamen Rider Build apart from the prior Kamen Rider Series; ultimately, the film Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders confirmed that Build took place in its own reality.


The main setting of the Korean dub of Build

  • In the Korean dub, the Sky Wall along with the main setting of Build is located in a fictional country instead of Japan.



Sento Kiryu (Takumi Katsuragi) - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi
Movie-exclusive: Kengo Ino - Killbus - Keiji Uraga
Transformation Gear
Fullbottles - Build Driver - Transteam Gun - (Great) Cross-Z Dragon - Sclashjellies - Sclash Driver - Hazard Trigger - Nebulasteam Gun - Cross-Z Magma Knuckle - Evol-Driver - Evol-Trigger - Grease Blizzard Knuckle - Killbuspider - Grease Perfect Kingdom
Drill Crusher - Hawk Gatlinger - 4Koma Ninpoutou - Kaizoku Hassyar - Fullbottle Buster - Steam Blade - Beat Closer - Twin Breaker - Muscle Glove - Solstall Wings - Giant Scratcher - Space Ride Arm - Spine Knuckle - Long Range Cleaner - Trash Converter - Gold Lio Gauntlet - Multi Deluge Gun
Pandora Box - Halfbodies - Fullbottle Holder - Build Phone
Vortex Finish - Hazard Level - Project Build - Sky Wall - Nebula Gas
nascita: Misora Isurugi - Soichi Isurugi - Sawa Takigawa - Kazumi Sawatari - Gentoku Himuro
Kamen Riders: Eiji Hino - Gentaro Kisaragi - Kouta Kazuraba - Takeru Tenkuji - Emu Hojo - Hiiro Kagami - Taiga Hanaya - Kiriya Kujo - Kuroto Dan - Parado - Sougo Tokiwa - Geiz Myokoin - Tsukuyomi
Prime Ministers: Taizan Himuro (Touto) - Yoshiko Tajimi (Hokuto) - Masakuni Mido (Seito)
Namba Heavy Industries Ltd.: Juzaburo Namba - Nariaki Utsumi - Haruhiko Wanibuchi - Guardian
Hell Bro's: Fu Washio - Rai Washio - Yoshikazu Takahashi - Norio Matsui
Aliens: Vernage
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai - Yoshikazu Takahashi - Norio Matsui
Touto: Needle Smash - Strong Smash - Burn Smash - Flying Smash - Mirage Smash - Square Smash - Press Smash - Ice Smash - Stretch Smash
Hokuto: Castle Hard Smash - Stag Hard Smash - Owl Hard Smash
Kaiser: Kaisei Mogami (World of Build, World of Ex-Aid)
Kengo Ino - Ryoka Saiga - Mitsuomi Gobara - Evolto - Killbus
Keiji Uraga - Simon Marcus (Phantom Crusher)
Community content is available under CC-BY-SA unless otherwise noted.