Name: Tsukasa Kadoya Warrior Name: Kamen Rider Decade Alias: Destroyer of Worlds Gender: Male Personality: Arrogant, haughty, somewhat tsundere, but actually cares for his comrades. Appearance: Brownish hair, red turtleneck inner shirt, black coat, magenta toy camera. Handsome and tall. Occupation: Former Great Leader of Dai-Shocker Color: Magenta Transformation Device: Decadriver Transformation Item: Rider Cards Weapon: Ride Booker Catchphrases: "I pretty much get the picture." / "I'm just a passing-through Kamen Rider. Remember that." Likes: Crab miso soup, chawanmushi, the color magenta. Dislikes: Sea cucumbers. Allies: Natsumi Hikari, Eijiro Hikari, Kivala, Yusuke Onodera. Rival: Daiki Kaito (They are comrades in a way, but also lead a cat-and-dog life. He's always troubled by Kaito stealing his Rider Cards.) A young man living as a lodger at the Hikari Photo Studio. He always carries a magenta toy camera and treasures it. He is extremely particular about magenta and gets angry if it's called pink. Even now, he appears out of nowhere, says "I get the picture," and leads the resolution of troubles in different worlds. He is a genius who can do almost anything once he understands it, though he has a clumsy side. Depending on the world, his occupation and position change, and his appearance may vary slightly. 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: Mobilates 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. Allies: 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 "ore-sama" (arrogant/self-centered) personality, always carrying himself with dignity. While he excels at fighting, he actually has quite a few weaknesses. In addition to high physical ability, he is surprisingly intelligent but doesn't flaunt it. However, he makes a smug face when things go well. He is a big eater and is often seen eating curry. He has met and fought Tsukasa Kadoya once before.