Ren Aoi

Ren Aoi (葵 連) is a mysterious man, who transforms into Kamen Rider Fifteen (仮面ライダーフィフティーン), created by the Badan Empire in order to defeat the Kamen Riders. He is father of Shu Aoi and husband of Saki Aoi.

Past
Ren Aoi was once a family man when his wife was alive. After his wife died in an accident while having to do to meet her son at lighthouse, Ren falls into despair for loosing his wife. In order to see her again, Ren joins the Underground Empire Badan, becoming their Armored Rider, in order to resurrect her by using his own son as a vessel without any hesitation when he learned that his son has a powerful imagination. However, his son ran away from him, due to his father joining Badan. Once he found where his son's whereabouts, he and the Empire go to Zawame City, the place that is also the source where the current Heisei Riders/Neo-Heisei Riders called Armored Riders created by Yggdrasill, and an alternate dimension Helheim where the Lockseeds and the Inves came from, which Badan may somehow take every one of Yggdrasill's data. Before hunting his son, he defeated and brainwashed most of the Showa Riders into believing that the Heisei Riders are nothing but nuisances and not actual heroes, as part of the plan of setting Zawame up as a battlefield for All-Riders from each era's side, with the losers are transformed into Lockseeds, then finally using his son once the Empire caught him.

ToQger vs. Gaim
Kamen Rider Fifteen first appears to fight the ToQgers, but is interfered by Showa Riders #1, #2, and V3. The three riders manage to drive off Fifteen, as he enters through a darker version of a Helheim Crack. During the post-credit scene, he foreshadows the events of Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai.

Arms
Like his fellow Armored Riders, Kamen Rider Fifteen's forms are called Arms (アームズ). But instead of normal fruit or nut Lockseeds, he uses the Heisei Rider Lockseed to channel the Legend Rider Lockseeds, allowing him to use the powers of the 15 Heisei Riders.

Devices

 * Sengoku Driver - Transformation device
 * Side weapons:
 * Unknown sword - Personal weapon both untransformed and in Fifteen Arms
 * Musou Saber - Secondary side weapon in Gaim Arms
 * Arms Weapons:
 * Ride Booker - Fifteen Decade Arms' personal weapon
 * Cosmic Module Barizun Sword - Fifteen Fourze Arms' personal weapon
 * WizarSwordGun - Fifteen Wizard Arms' personal weapon
 * Daidaimaru - Fifteen Gaim Arms' personal weapon
 * Lockseeds - Gives access to Fifteen's form changes, depending on which arm the lock is.

Portrayal
Ren Aoi was portrayed by Itsuji Itao (板尾 創路), who previously portrayed Spider in Kamen Rider The First.