|This article is about a/an villain in Kamen Rider Black RX.|
Emperor Crisis (クライシス皇帝 Kuraishisu Kōtei) is the ruling dictator of the Crisis Empire, who is not seen at first but mentioned several times throughout the series. He is able to release electrical bolts from his eyes capable of spawning explosions and telekinetically lifting people, has a pair of tentacles that can mutate bodies, fire lasers from his smaller eyes, launch energy stakes from his mouth, and teleport. He resides in Crisis City at the Empire's home world. He conquered the Demon World in the distant past, transforming it from a peaceful world into an industrialized universal power which expanded its claws onto multiple planets. However, due to the Emperor's policies, completely disregarding the nature of the Demon World, its environment was destroyed and the planet itself was slowly dying, heading to complete destruction.
Aiming to save his empire, Crisis sent his army to take over Earth, planning to destroy humanity and move the population of Crisis from their original world to rule Earth. To inspect the invasion's lack of progress, he eventually takes charge of the operation disguised as Dasmader, a high ranking inspector supposedly sent by the emperor himself when it was really a second body for him.
After many failures, Lord Crisis eventually offered Black RX the chance to replace General Jark and become his new right hand or even rule Earth if he agreed to his plans. When refused, he faced Black RX as Dasmader, attempting to destroy Black RX with the Crisis Fortress, only for RX to follow him into it.
Black RX finally sees Crisis itself from space, and realizes that it's identical to Earth. In fact, the Emperor claims that Crisis is a mirror world to Earth, and it's dying due to Earth's pollution and humanity's evil, only for Black RX to reject his claims, affirming that it was the Emperor's policies that led to that.
After being defeated as Dasmader, he revealed himself, appearing as a giant alien head in a last attempt to defeat Black RX. He was destroyed by RX's Revolcane and the demon world blew up as it was linked to him. While dying, he claimed that as long as humanity's evil continued to exist, they'd give birth to a new Crisis and he'd return alongside it.
- Due to his voice actor, role and appearance, the Crisis Emperor is often associated with the Great Leader of Shocker and assumed to be one of his forms. However, there's no actual in-continuity material pointing towards that idea. The previous Riders also never acknowledge his voice in spite of spying on Black RX's meeting with him.
- On the other hand, in the crossover videogame Tokusatsu Adventure Battle Super Hero Retsuden (特撮冒険活劇 スーパーヒーロー烈伝 Tokusatsu bōken katsugeki supā hīrō retsuden), which has a retelling of the stories of several tokusatsu series mixed into a large original crossover story, the Crisis Emperor is revealed to be the real form of the Great Leader in the game's Rider route.