Marmo's Magical Powers
When a head of a two-headed ammonite Mutant becomes detached by Kamen Rider Black, it ends up with a kid where it becomes his new pet.
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More from this season
S8 E1
BLACK!! Transform
Kotaro Minami, a youth on the run from the mysterious organization known as Golgom, begins to awaken into a horrifying new form granted to them due to their greater plans for him; making him choose to use it instead to fight them as Kamen Rider Black.
S8 E2
The Monster Party
Kotaro looks for his step-brother Nobuhiko Akizuki and plans to track down Golgom's headquarters.
S8 E3
Mysterious Cyborg Mystery
Kotaro investigates a bizarre string of abductions in conjunction with a scheme by Bishium to bring him down.
S8 E4
The Devil's Laboratory
A cycling friend of Kotaro becomes the subject of Golgom's mad doctor experimenting to find a weakness to their escaped subject.