Name: Tsukasa Kadoya Warrior Name: Kamen Rider Decade Alias: Destroyer of Worlds Gender: Male Personality: Arrogant, somewhat tsundere, but actually cares for his comrades. Appearance: Brownish hair, red turtleneck inner, black coat, magenta toy camera, handsome, tall. Occupation: Former Great Leader of Dai-Shocker Color: Magenta Transformation Device: Decadriver Transformation Item: Rider Cards Weapon: Ride Booker Catchphrase: "I've got the gist of it.", "Just a passing-through Kamen Rider. Remember that." Likes: Crab miso soup, chawanmushi, the color magenta. Dislikes: Sea cucumbers Comrades: Natsumi Hikari, Eijiro Hikari, Kivala, Yusuke Onodera Rival: Daiki Kaito (They are comrades in a way, but have a cat-and-dog relationship. He's always troubled by Kaito stealing his Rider Cards.) A young man living as a lodger at the Hikari Studio. He always carries a magenta toy camera and treasures it. He is strongly obsessed with magenta and gets angry if it's called pink. Even now, he appears out of nowhere, says "I've got the gist of it," and leads the conflicts of different worlds to a resolution. He is surprisingly versatile and has a genius side where he can do almost anything once he understands it, but he also has a clumsy side. Depending on the world, his occupation and position may change, and his appearance may vary in places. He has met and fought Marvelous once before.

Name: Captain Marvelous Warrior Name: Gokai Red Gender: Male Personality: Confident, fearless, strong-willed, cares for his comrades. Appearance: Spiky black hair, red Napoleon-style long jacket, black vest, black pants, and boots. Occupation: Captain of the Space Pirates Color: Red Transformation Device: Mobirates Transformation Item: Ranger Keys Weapon: Gokai Saber, Gokai Gun Catchphrase: "Let's make it showy!" Likes: Treasure, curry, Super Sentai, Kamen Rider. Dislikes: General housework, psychological games like poker. Comrades: Navi, Joe Gibken, Luka Millfy, Don Dogoier, Ahim de Famille, Gai Ikari The captain of the space pirates who fought against the Space Empire Zangyack, an organization that destroyed many planets and ruled most of the universe. Currently, he travels to various places on the Gokai Galleon, seeking treasure all over the world. He has a bold, aggressive, and self-centered personality, always acting with dignity. While he excels at fighting, he actually has quite a few things he's bad at. Not only does he have high physical abilities, but he is also surprisingly intelligent, though he doesn't flaunt it. However, he makes a smug face when things go well. He is basically a big eater and often eats curry. He has met and fought Tsukasa Kadoya once before.