Kazuma Kenzaki (Prime Reality)

1= "Tachibana! Why are you watching? Tachibana...have you really betrayed us?!"

- Kenzaki's infamous quote, which later became a meme

2= "I will fight fate...and win."

- Kenzaki after turning into the second Joker

Kazuma Kenzaki (剣崎 一真) is the main protagonist of the Kamen Rider Blade television series. He was chosen by the B.O.A.R.D. organization to use the sealed Category Ace of Spades to become Kamen Rider Blade (仮面ライダーブレイド). He has a good heart and believes in fighting to protect humanity.

He returns in Kamen Rider Zi-O: Another Story, in which he transforms into Another Blade (アナザーブレイド), an Another Rider derived from his Kamen Rider Blade powers.

Forms
As Blade, Kenzaki harnesses the Beetle Undead DNA from the A: Change Beetle Rouze Card, utilizing the Blay Buckle Rider System to fuse with the Beetle Undead's DNA. With the Blay Rouzer saber, he can "rouse" a sealed Suit-Spade Undead's power to utilize personally or use Common Blanks to seal the Undead. Having a strong fusion ratio with the Undeads of the Spade category, Kenzaki is able to bring forth each Undeads' true powers, to the point of managing to fuse with all thirteen simultaneously as Blade King Form.

In the final episode of Kamen Rider Blade, Kenzaki mutated into a Joker Undead to put the Battle Fight at a stalemate, thereby ending it without sealing Hajime. This form was never shown in the series.

Device

 * Blay Buckle: Primary transformation belt
 * Rouze Card: Allow Blade to attack, depending on which card is used

Weapons

 * Blay Rouzer: Personal weapon

Portrayal
Kazuma Kenzaki is portrayed by Takayuki Tsubaki (椿 隆之).

Rider No.
As the leading Rider protagonist of Kamen Rider Blade]], Kazuma Kenzaki (Kamen Rider Blade) is labeled Kamen Rider #20 (仮面ライダー20号) and Heisei Rider #5 (平成ライダー5号).

Meme
Kazuma is the center of a Japanese meme dubbed "Ondul" (ｵﾝﾄﾞｩﾙ), in which actor Takayuki Tsubaki's emotion-slurred speech, is treated as a separate language (the name comes from his line in the first episode, "Have you really betrayed us?!" (本当に裏切ったんですか!), with "honto" ("really") coming out as "ondul", turning into Ondourur ragitta ndisukā! (ｵﾝﾄﾞｩﾙﾙﾗｷﾞｯﾀﾝﾃﾞｨｽｶｰ!)). This meme was named the "Ondul Language" (オンドゥル語) and has been referenced in other works, such as The Melancholy of Haruhi Suzumiya.

The meme has been acknowledged within the Kamen Rider franchise, with Kazuma Kendate of Kamen Rider Decade mistaking "Chief" and "cheese". It is further referenced in Kamen Rider Climax Heroes, where "Have you really betrayed us?!" is Blade's special intro dialog with Garren, and in Kamen Rider: Battride War, where the quote is the name of one of the game's achievements. Sougo Tokiwa, in disbelief, yelled the same thing towards Kazuma upon seeing he was Another Blade.