Ren Akiyama/Advent Calendar

In the alternate ending, Advent Calendar, Ren Akiyama (秋山 蓮) is one of the participants of the Rider Fight known as Kamen Rider Knight (仮面ライダーナイト).

Advent Calendar
In the Advent Calendar, with the Rider War is reaching it's final, Ryuki, Knight, Ouja, Zolda and Odin are the surviving Riders left. While Ouja fought Knight he causes Knight to buried under some rubbles. Ryuki shows up and challenges Ouja into a fight as he stole Knight's Survive Card and and transformed into Ouja Survive with Venosnaker evolves into Venoviper. He then uses his new Unite Vent card with all the contracted monsters' cards he's gathered up till now from the Riders he defeated with Darkwing card which he also stole from Knight. All of his monsters, as well as Dragreder which just happened to be nearby, combine to form the Genosurvivor.

Kitaoka shows up and transforms into Zolda and summons Magnugiga and uses End of World, blowing everything away. Ryuki sees the rubble with Knight in it blown away too and with his love, anger and all of his sorrow his body possessed by the spirit of his late order brother, Shinichi Kido. Looking at the dead body of Ouja and Zolda (who also died after caught in the explosion of his own attack), Yui says he did it, and when doing so he and Dragreder had turned black means that now he is Ryuga. Ren shows up revealing that he was never here, the Knight that Ouja defeated was a copy made with Trick Vent. He and Shinji are the last two Riders remaining (Odin works as the Rider who only granting wish rather than fighting) and have to fight. With Shinji emerge as the victor, Odin was summoned while granting a wish which is to reviving all of the victims of the Rider War.

Forms
Knight 1= 2= Rider Statistics Rider Senses: Ability Parameters: Special Attacks:
 * Rider Height: 195 cm.
 * Rider Weight: 95 kg.
 * Eyesight: 10 km.
 * Hearing: 25 km.
 * Punching Power: 200 AP (10 t.)
 * Kicking Power: 300 AP (15 t.)
 * Maximum Jump Height: 40 m.
 * Maximum Running Speed: 100 m. per 4.5 sec.
 * Wing Lancer: 2000 AP (100 t.)
 * Sonic Breaker: 1000 AP (50 t.)
 * Shadow Illusion: 1000 AP (50 t.)
 * Wing Wall: 3000 GP (150 t.)
 * Hishouzan: 5000 AP (250 t.)
 * Advent: Darkwing: 4000 AP (200 t.)

Ren can transform into Kamen Rider Knight's default form using his Advent Deck and V-Buckle upon forming a contract with Darkwing. His Visor, the Dark Visor, is a rapier that also functions as his personal weapon. In comparison to Ryuki, Knight has lower kicking power but higher jump height and running speed.

In addition to the Dark Visor, Knight can arm himself with the Wing Lancer (ウイングランサー), a lance derived from Darkwing's tail, by using his Sword Vent Advent Card. The remainder of Darkwing's body can be mounted on Knight's back, where its wings become a cape. This can be done by using either his Guard Vent or Final Vent. (However, Ren is often seen transforming into Knight with the cape already equipped). When using the Guard Vent card, the wings are in their original form and close around Knight to form the Wing Wall in order to protect him from attacks.

Using his Final Vent allows Knight to perform his finisher, the Hishouzan (飛翔斬), which equips him the Wing Lancer and Darkwing's cape form if he does not already possess them. Knight then jumps into the air and performs a drop kick while holding the Wing Lancer downward, resulting in it being parallel to his legs. Finally, Knight's cape forms a drill around him before he strikes the enemy.

Appearances: ''Advent Calendar

Equipment

 * Advent Deck - Transformation device and Advent Card holder
 * V-Buckle - Transformation belt
 * Advent Cards - Trinkets that enable a Rider to summon Contract Monsters, access equipment, and use special abilities
 * Dark Visor - Knight's Visor that enables him to use Advent Cards
 * Dark Visor-Zwei - Upgraded version of the Dark Visor used to transform into Knight Survive

Vehicles

 * Ride Shooter - Motorcycle used by any Rider to enter the Mirror World