Emperor Crisis (クライシス皇帝 Kuraishisu Kōtei) is the unseen leader of the Crisis Empire which is fought by an alternate Kotaro Minami in the World of Black RX. Arriving in the World of Black RX, Apollo Geist conveyed a message to Strange Demon Robot Schwarian to send to Emperor Crisis, requesting that the Crisis Empire join Dai-Shocker. Schwarian originally turned down Apollo Geist's offer to join Dai-Shocker until he saw his power first hand. RX! Dai-Shocker Attack However, Kamen Riders Decade, Diend, Black RX, and Kotaro Minami from the World of Black, fought together against the forces of the Crisis Empire and Dai-Shocker, resulting in Schwarian's destruction and Apollo Geist retreating from the World of Black RX. Black × Black RX