Kazuma Kenzaki
Kazuma Kenzaki (剣崎 一真, Kenzaki Kazuma?) is the original Kamen Rider Blade (仮面ライダーブレイド, Kamen Raidā Bureido?) as well as The Navy Joker who appears about 5 years after the series original ending in the World of Rider War as the A.R. Worlds continue to fuse. He is first seen with Natsumi Hikari, pointing out to her that Dai-Shocker isn't the real enemy. As Natsumi asks in question, he had already left the scene. He then appears before Asumu, Wataru, Yusuke Onodera, and Daiki Kaito and says that their true enemy is Tsukasa, using them to force him to leave while he can or destroy him if he refuses. It is noteworthy that Kenzaki is able to transform directly to King Form using just the Change Beetle card alone as the belt now uses Kamen Rider Leangle's "Open Up!" feature, rather than the original "Turn Up!" feature, projecting a gold version of the transformation screen that depicts the Evolution Caucasus beetle. As Kenzaki attempts to force Tsukasa to leave the world, he refuses, transforming into Kamen Rider Decade. But Tsukasa proved no match as Kenzaki overpowers him throughout the entire fight. Kenzaki then directly uses The Royal Straight Flush to finish the fight as he severely injures Tsukasa. He then assumes King Form and teams up with Wataru Kurenai and the rest of the Kamen Riders to fight Tsukasa in the Rider War.
In Kamen Rider × Kamen Rider W & Decade: Movie War 2010: Decade: The Last Story, Kenzaki in his regular Ace Form teams up with Shinji Kido, Kamen Rider Ryuki, to fight Tsukasa. But Tsukasa gains the upper hand as he transforms into Decade Violent Emotion. As he overpowers both of them, Tsukasa turns Kenzaki into "Blade Blade" and kills Shinji. With Kenzaki stunned, Tsukasa finally activates his "Final Attack Ride" and kills Kenzaki as well, resulting in both Kamen Riders being turned into cards. He is later revived, as well as the rest of the Kamen Riders after Tsukasa is voluntarily destroyed. But Kenzaki mysteriously disappears as he did not take part in the final battle against Super Shocker. Instead, it would be Kazuma Kendate, Kenzaki's alternate reality version to help Tsukasa and the rest of the Kamen Riders in the battle against Super Shocker, assuming King Form with Decade's K-Touch.
Takayuki Tsubaki (椿 隆之, Tsubaki Takayuki?) reprises his role as Kazuma Kenzaki from Kamen Rider Blade.
Read more about this topic: List Of Kamen Rider Decade Characters, Cameo Appearances