|This article is about a/an kaijin in Kamen Rider Black RX.|
Known as the "Knight of Wind", Gynagiskhan was an insectoid-like horseman with sensitive hearing who used a glaive in battle and could manipulate winds up to 100 mph. He has a special technique called the Demon Wind Beam Hurricane in which he shoots beams that blows his foes away. He brought Kohtaro and his friends into the Desert of Fierce Winds where Professor Walter and his followers were exiled. After killing Walter, Gynagiskhan battles RX with Reiko's musical necklace disrupting Gynagiskhan long enough for RX to until he was weakened enough to kill him with the Revolcane.