Male Real Name: Kadoya Tsukasa Transformations: Kamen Rider Decade, and all other Heisei Riders. Characteristics: He woke up one day having suddenly lost his memories. He was taken in by the Hikari Studio and worked ordinarily as a photographer until monsters from other worlds began to invade and the world started to collapse. At that moment, he received the Decadriver and Rider Cards from Natsumi to perform his first transformation. After hearing about his destiny from a man named Kurenai Wataru, he began traveling to save other people and worlds. Signature Phrases: "I'm just a passing-through Kamen Rider," "Remember that."

Male Real Name: Onodera Yusuke Transformation: Kamen Rider Kuuga Characteristics: The Kamen Rider Kuuga of the World of Kuuga. In the past, he dealt with the Grongi monsters of his world alongside a female police officer named Yashiro. After meeting Tsukasa and seeing the destruction of the World of Kuuga draw near, he worked to prevent the crisis and has been traveling with Tsukasa and Natsumi ever since.

Male Real Name: Kaito Daiki Transformation: Kamen Rider Diend Abilities: He can summon any Heisei Rider using Rider Cards, though he cannot transform into all of them himself. Characteristics: He operated alongside Tsukasa in the past, but Tsukasa does not remember him due to his memory loss. Like Tsukasa, he travels through worlds, but he is a treasure hunter who steals the treasures of each world.