|This article is about a/an kaijin in Kamen Rider (Skyrider).|
Using an amusement park as a front, Haejigokujin engineered a scheme of placing his deadly Hell's Flora pollen, containing the deadly Dokuda enzyme, in balloons that would pop via remote control over Tokyo and cause an epidemic. However, with Tani's aid, Tsukuba foils the scheme while it is still in the testing phase. After disposing of SkyRider, Haejigokujin captures the Kamen Rider's friends to enact the final test of his poison. However, surviving the trap, SkyRider covers his friends' escape while destroying the underground lab. Once mortally wounded by SkyRider's Sky Kick, Haejiguokujin explodes while realizing SkyRider is stronger then he perceived.
Haejigokujin was armed with a whip. He could produce his own Hell's Flora pollen, containing the deadly Dokuda enzyme.