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 the father of Shuu Aoi and husband of Saki Aoi.

Past
Ren Aoi is a family man when his son was alive. After his son died in an accident while having to do with meeting his wife at a lighthouse, Ren falls into despair after losing his son. When his son is in fact alive, Ren joins the Underground Empire Badan, becoming their Kamen Rider to find his still alive son, but somehow got brainwashed into their pawn.

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-credits scene, he foreshadows the events of Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai.

Heisei Rider vs. Showa Rider: Kamen Rider Taisen
After finding his son at Zawame City, Ren appeared in his normal identity, battling Gaim, Baron, Ryugen and Zangetsu Shin, transforming into Fifteen, able to defeat Zangetsu Shin then later Ryugen, thanks to Heisei Rider Lockseed he use as Wizard Arms. His battle with Gaim is interrupted by three very first Showa Riders, leading Gaim to escape with Shu and Mai to safety. He found his son again in his home and tells him to come. However, his son refused because Ren began to act strangely due to him being brainwashed, thus leading to Ren forcing his hand to take him away from Heisei Riders' protection. Upon his son finally caught nearby the lighthouse where his wife, Saki is, Fifteen managed to take his son away from the Heisei Riders and meet his wife. He is defeated by Kamen Rider Gaim 1 Arms after he was overpowered by his 1 Squash, destroying his Sengoku Driver and its Yomimaru, thus freeing him from Badan's grasp. After realizing for what he did when he was brainwashed by Badan, his son began fading away, but managed to take his son to the lighthouse to reunite with his wife, thanks to the Riders (mostly Showa Riders' Rider Syndrome teleportation) and seeing their son disappear to the top of sky as a light above them.

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
 * Lockseeds - Gives access to Fifteen's Arms changes, depending on which lock is used

Weapons

 * Side weapons:
 * Yomimaru - Personal weapon both untransformed and in any Arms
 * Musou Saber - Secondary side weapon in Gaim Arms
 * Arms Weapons - Weapons that come with the Arms:
 * Ride Booker - Fifteen Decade Arms' personal weapon
 * Ongekibou Rekka - Fifteen Decade Arms' personal weapons channeling Hibiki's power
 * Elek Module Billy the Rod, Cosmic Module Barizun Sword - Fifteen Fourze Arms' rotating personal weapons
 * WizarSwordGun - Fifteen Wizard Arms' personal weapon
 * Daidaimaru - Fifteen Gaim Arms' personal weapon

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

His suit actor is Kenji Tominaga (富永 研司), who is previously the suit actor for the Kamen Rider Bujin Gaim and Ogre Phantom in the previous movie. Tominaga also served as suit actor for Kamen Rider Duke in Kamen Rider Gaim series.