Past Man

The "Past Man" (過去の男) is a mysterious figure that appears in times in the past when Imagin appear who are out to get him.

History
He has a Seiko pocket watch with the phrase "The past should give us hope" on the back etched. He wears a trenchcoat and many caps. When Ryotaro bumps into the "Past Man" at one point, he saw that he was the Yuto Sakurai he knew: Airi's fiancé who mysteriously disappeared and is believed to be dead. Ryotaro remembers him as a kind figure who was into astronomy and loved Airi's coffee, and as such, almost considered him family. As he is Yuto's future self, Sakurai has access to the Zeronos arsenal. Eventually, the memory of Sakurai is completely erased from mostly everyone within Ryotaro's time. This happens because Sakurai provided Deneb with the first set of Zeronos Cards Yuto uses at the cost of his future self's existence, with the final Zeronos card presented to Yuto in the final battle completely erasing him from time, although Airi is confident that her love will return to her in time.

Device

 * Zeronos Belt: Transformation Belt
 * Zeronos Card: Cards that allow Zeronos to change forms and perform attacks

Weapons

 * ZeroGasher: Personal/primary weapon for Altair form

Vehicles

 * Machine ZeroHorn: Zeronos' Rider Machine