|This article is about a/an Imagin in Kamen Rider Zi-O and Kamen Rider Build.|
Futaros made a contract with Ataru Hisanaga, to bring the Kamen Riders to the real world. With his powers, Futaros was able to protect Gentoku Himuro, Kazumi Sawatari, Ryuga Banjo, Sento Kiryu and Sougo Tokiwa's memories from being erased by the Super Time Jacker Tid. However, the strain of trying to protect the memories of multiple Kamen Riders and their allies is too taxing on him, causing some of them to revert back to their "real world" selves and losing their memories.
When Tid unleashes an army of kaijin combatants from several Heisei Rider antagonists, Futaros has Ataru give him a physical body. After defending Ataru from them, he heads back to January 29, 2000 in order to prevent Shingo's disappearance. However, he fails as Another Double kidnaps Shingo and transforms Ataru into Another Den-O. Joining Sougo, the two try to rescue Shingo and Ataru but their Time Mazine is damaged by Tid/Another Kuuga. They are rescued by Geiz and Tsukuyomi and with the Den-Liner's help, arrive back in 2018 and crash into Tid's lair. Futaros tries to free Ataru from Tid's brainwashing but fails until he, Another Den-O, Sougo, Geiz, and several kaijin combatants are transported away and Kamen Rider Den-O defeats and frees Ataru.
After Tid is defeated, Futaros finished his contract and then leaves his blessings to the Hisanaga brothers, walking away to parts unknown.
- Motif basis: Devil
- Fable Basis: Legends of Kotaro Fuma
- Contract holder/host: Ataru Hisanaga
- Rider Ticket date: January 29, 2000
Behind the Scenes
Futaros's name is a combination of words Future and Taros (his Imagin type). Additionally, it can also be a portmanteau of Fuma Kotaro, based on his fable basis.
- Futaros is the first Imagin to not be designed by Imagin creator and character designer Yasushi Nirasawa due to Nirasawa's passing in 2016. Instead, he is designed by Tamotsu Shinohara.
- Futaros is the first non-villainous Imagin debut in a film after Teddy.