|This article is about a/an kaijin in Kamen Rider Spirits.|
|Season:||Kamen Rider Spirits|
|Number of Episode|
Great Leader JUDO (大首領 JUDO Dai Shūryō JUDO?) - The main antagonist of the series, he is the same "Great Leader" who was the supreme leader of all the evil organizations the previous Kamen Riders faced in the past. He leads the Badan Empire and is worshiped like a god by his followers. His preferred forms are a giant silver skull and a golden version of ZX called Susanoo (スサノオ?), with the ability to transform into eight Showa Kamen Riders akin to Kamen Rider Decade's ability to transform into the nine Heisei Riders. He has his own language, which he can telepathically compel others to understand.
Similar to Kamen Rider Decade's ability to transform into the first Nine Heisei Riders, Susanoo can transform into the first eight riders of the Showa period, except Riderman. Ironically, Decade was a "Great Leader" as well, having originally been the Great Leader of Dai-Shocker. According to JUDO, each riders represent evolution level of himself, and it's possibly that he can't change back once switch to next one.