|This article is about a/an evil organization in Kamen Rider SD.|
GranShocker (グランショッカー Guran Shokkā) is the evil organization of Kamen Rider SD.
Similar to the later Dai-Shocker from Kamen Rider Decade, not only is their name based on Shocker, the original evil organization from Kamen Rider, but they are an alliance of various villains from across the Kamen Rider Series up to Kamen Rider Black RX.
- General Jark: The current general of GranShocker. In a stark contrast from his television counterpart, he is short-tempered and quick to anger, often going so far as to blow up his own headquarters simply to destroy a cockroach. He is defeated in the end of the movie after blowing up his headquarters for the third time.
- Ambassador Hell: He was among the meeting with the Great Leader. Unlike his television counterpart, his helmet has horns on the side and his right eye is cybernetic.
- Ambassador Darkness : He was among the meeting with the Great Leader. Unlike his TV counterpart, his left eye is cybernetic.
- General Shadow: He was among the meeting with the Great Leader. This version wears a black top hat.
- Apollo Geist: He was among the meeting with the Great Leader.
- Doktor G: He was among the meeting with the Great Leader.
- Ten-Faced Demon Gorgos: He was among the meeting with the Great Leader. This version appears to have wings.
- The Great Leader: The apparent controlling force of every Kamen Rider villain since the original series. He appears in SD as an overly large body sitting atop a throne with a booming voice.
- GranShocker Soldiers: The soldiers of GranShocker wear blue and yellow uniforms, although they appear to pose little threat against the Kamen Riders, and are easily beaten. They all make high-pitched squeals for dialogue.
- Shadow Moon: The brother of Black RX and apparently a Kamen Rider himself. This version of Shadow Moon tries his best to be evil, but falls short of his own expectations. He is armed with the Satan Saber and an unknown motorcycle (possibly a Road Sector modification). He is constantly teased by Black RX, whom refers to him as "Sunshine Moon."
- Kumo-Otoko: The very first kajin to ever appear in Kamen Rider is the main villain whom RX is fighting against in this animated short. He kidnaps Michiru and brainwashes her, and sets a trap for Black RX. He is weakened by the other Riders just in time for Black RX to destroy him.