Chaps are the Crisis Empire's foot soldiers and antagonists in Kamen Rider Black RX. They come in three colors: gray, brown and black and later wear capes. The last of them were finished by the original 10 Kamen Riders before Black RX battles Dasmader.
World of Black RX
The Chaps also served as the foot soldiers of the Crisis Empire in the World of Black RX.
Cell Medal recreations of the Chaps appear as part of a Combatman Yummy army, the product of Shocker Combatman In Sendo's desire for like-minded allies to defeat the Kamen Riders, based on the grunts from past villainous groups who fought against Kamen Riders, whom Sendo refers to as the "past generation combatmen". They fight Kamen Rider OOO but are eventually all destroyed by Kamen Rider OOO Tajadol Combo's Magna Blaze Giga Scan.
Kamen Rider Fourze
A trio of Chaps were seen fighting RX in new video footage that Tomoko Nozama found on the internet, along with other clips of past Kamen Riders, who are now known as urban legends.
The Chaps eventually joined the ranks of Dai-Shocker, an organization made up of all the enemies of the Kamen Riders. They were seen during the "Super Hero Taisen" incident.