Sakuya Tachibana/Missing Ace

In an alternate story, Sakuya Tachibana (橘 朔也) was chosen by B.O.A.R.D. to use the sealed Category Ace of Diamonds to become Kamen Rider Garren (仮面ライダーギャレン). Five years after the sealing of the Joker Undead, he becomes the chief of B.O.A.R.D., succeeding Kei Karasuma.

Missing Ace
In the alternate story, Kazuma Kenzaki seals Hajime Aikawa, he and Chief Karasuma decided to put away all the sealed Undeads after they discover all Category King cards combine into a Vanity Card as the second Joker existed. As they were transporting the sealed Undeads away, they got ambushed by the Albino Joker. Just as Chief Karasuma tries to escape with the cards, the Albino Joker kills him as he unseals some of the Undeads. Four years later, he hires Junichi Shimura, along with Natsumi Miwa and Shin Magaki to reseal the Undeads as he can't rehire Kazuma and Mutsuki due to the fact that some of the unsealed Undeads are Category Ace of Spades and Category Ace of Clubs. Sakuya later fights the Spider Undead and reseals it as Mutsuki regains the ability to transform into Kamen Rider Leangle. Later, Sakuya orders everyone to work together to reseals all the Undeads much to Natsumi's and Shin's chagrin.

Later, Mutsuki tells Sakuya that he suspects something strange about Junichi as he communicates with the Giraffa Undead with a strange language. But he declines it as Sakuya tells Mutsuki that Junichi learned to speak foreign languages from abroad. Later, he is shocked to discover that both Natsumi and Shin were killed by the Albino Joker as he realizes that the Joker is among all of the riders. When Amane is being targeted by the AlbiRoaches, Sakuya brought her to safety as he reveals that her father opened the Relief's Stone Door moments before he died. Due to this, she was targeted by the Albino Joker as her dad's replacement for the Relief's sacrificial lamb in order to gain it's power. Kotaro reveals to everyone that Junichi himself is the Albino Joker as both of his victims hold the cards 4 and Jack (both of which are a pun of his name (i.e. "Jack" and "Shi")). After Albino Joker kidnaps Amane and traps her into the vanity card, Sakuya and the others fight Albino Joker in Jashin-14 form. Sometime after Jashin-14's defeat, he and the others celebrates Amane's birthday at the Jacaranda Cafe.

Equipment

 * Garren Buckle: Garren's transformation device
 * Rouze Absorber: Used to access Jack Form
 * Rouze Cards: Allow Garren to perform special attacks
 * Garren Rouzer: Garren's personal weapon
 * Red Rhombus: Garren's Rider Machine

Portrayal
Sakuya Tachibana is portrayed by Kousei (Hironari) Amano (天野 浩成). As Kamen Rider Garren, his suit actor was Yoshifumi Oshikawa (押川 善文).

Appearances

 * Icon-blade.png Kamen Rider Blade
 * Kamen Rider Blade: Missing Ace