Subst Worm

Subst Worm (voiced by Takako Igarashi and Norihito Ito) is a crayfish-themed Worm. A former servant of Uca Worm who turned on her mistress for "betraying herself and the Worms." He can swim, has a thick shell that allows him to dive up to 6 kilometers underwater, and can fire energy arrows from his right arm. Destroyed by Hyper Kabuto's Hyper Slash.

A member of Shade under Daido Oda transformed into Subst Worm. He fought alongside Brachypelma Worm Viridis, Acarina Worm, and Cochlea Worm, against Kamen Rider G who destroyed them all.

In the World of Kabuto, a Subst Worm posed as a young man and targeted Mayu, chasing her and Natsumi down until it is destroyed by a shockwave from Mayu's transformation into the Sisyra Worm.

The Subst Worm, among many other revived monsters, was part of the Dai-Shocker army in the World of Decade that was fought and wiped out by a gathering of 25 Kamen Riders.

Trivia

 * TBA