Ken Hisatsu

"Polishing the talent! I cut open my future. Amazing Ability, GekiChopper!"

- GekiChopper's roll call

Ken Hisatsu (久津 ケン) is GekiChopper (ゲキチョッパー) the fifth member of the Gekirangers, colored white with orange accents in a suit that resembles a karate uniform.

Gekiranger
He is a lazy prodigy who trained at the Beast Origin Village and mastered one of the oldest fighting styles in the Beast Arts: the karate-styled Fierce Beast Rhinoceros-Fist (激獣ライノセラス拳) as a way to get over the pain of losing his mother at a young age. Ken was originally to aid Ran Uzaki and Retsu Fukami, but he left to travel abroad since his GekiChangers were busted. Furthermore, he sold the Virtuous Beast Sword that Sha-Fu gave him for travelling money.

He is a free spirit as well, not letting his own talents and family ties to the Fierce Beast-Fist be all he's known for. Ken can utilize the Fierce Ki Hard Diamond (激気研鑽), a genius technique in which he condenses his Fierce Ki into a diamond blade on his hand with which can cut through anything. However, his laziness and frequent complaining get in the way. He eventually manifested Extreme Ki on Christmas Eve out of his passion for the holidays. He frequently uses the word "Osu" (押忍), which is a term in karate meaning "patience with myself and others." He also uses "kenzan," an archaic Japanese word that means "Just arrived" and is also a pun on his name, Ken. Using the SoZyuTo, he can summon and control Beast-Fist God SaiDain/Beast-Fist Giant God SaiDaiOh.

During the final battle, Ken, alongside the other Fierce Beast Fist users, including the Fist Sages, keep Long at bay until Jan Kandou, Ran, and Retsu return. He witnesses the three Gekirangers defeating Long and sealing his powers. After the battle is over, Ken returns to work at SCRTC Meisters. Jan meets up with Ken to say farewell one last time before setting off on his own journey.

Gokaiger
A few years later, Ken fought alongside not only his own team, but every single Sentai ranger in existence, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders. AkaRenger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada.

Super Hero Taisen
Ken, alongside his team (Rio and Mele were absent), among the majority of the Super Sentai heroes, was caught up in the "Super Hero Taisen" incident which eventually resulted in the Super Sentai teams and Kamen Riders joining forces to defeat both Dai-Zangyack and Dai-Shocker. He is seen fighting Bat Imagin.

GekiBeasts

 * Beast-Fist God SaiDain / Beast-Fist Giant God SaiDaiOh

Arsenal

 * Beast-Fist Henshin GekiChangers
 * Strongest Henshin Hand-Blade SaiBlade
 * Virtuous Beast Sword

Gekiwaza
Although Ken possesses only basic Geki energy, the sheer power of his Fierce Ki Hard Diamond technique enables him to fight on the same level as Gou with his Fierce Violet Ki or the others with their Kageki An ancient Gekiwaza of Brusa Ee that Ken mastered with his Fierce Ki Hard Diamond technique.
 * Rhinoceros-Fist Gekiwaza
 * Sharp-Sharp Blade (鋭鋭刀): Used with SaiBlade Cutter Mode, a powerful slash of the SaiBlade
 * Beast Origin Style Sharp-Sharp Blade (獣源流鋭鋭刀): A stronger version of the attack.
 * Sharp-Sharp Extreme Ki Slash (鋭鋭過激気斬): Using the power of muni-muni (teamwork), Super GekiRed and GekiChopper combine the Super GekiClaw and SaiBlade into the Super SaiBlade. Super GekiRed then uses Extreme Ki Infusion on GekiChopper who is now able performs a powerful slash, creating the Extreme Ki Hard Diamond (過激気研鑽) power.
 * Sharp-Sharp Extreme Ki Slash Christmas Special (鋭鋭過激気斬クリスマススペシャル):
 * Twist-Twist Bullet (捻捻弾): GekiChopper uses the SaiBlade Finger mode to fire a rapid barrage.
 * Super Twist-Twist Bullet (超捻捻弾): GekiChopper fires a single powerful projectile from the SaiBlade Finger.
 * Twist-Twist Bullet: Inner-Unrest (捻捻弾・乱れ撃ち): GekiChopper uses the SaiBlade Finger mode to fire a multi-rapid barrage.
 * Many-Many Slash (千千斬): Flipping through the air, GekiChopper uses his Fierce Ki Hard Diamond with the SaiBlade Cutter to perform multiple slashes on an opponent.

Techiques utilized by SaiDaiOh as controlled by GekiChopper.
 * SaiDaiOh Gekiwaza
 * Break Big Burst Connect (砕大爆連): SaiDaiOh sticks his sword in the ground, leaving a trail of explosions.
 * Big Ice Floe Mountain (大氷塊山): SaiDaiOh spins his sword very fast, creating a freezing storm.
 * Great-Great Break Big Slash (大大砕大斬): The Break Big Sword's blade extends at the enemy and slashes them, forming a "Great" (大) mark on the opponent.

Ranger Key
The GekiChopper Ranger Key (ゲキチョッパーレンジャーキー) is Ken Hisatsu's personal Ranger Key and what became of his powers after he along with the rest of the 34 Super Sentai sacrificed their powers to end the Great Legend War.

This key along with the majority of the Ranger Keys were collected by the Red Pirates and later used by the Gokaigers. The GekiChopper Ranger Key was mainly used by Ahim de Famille (Gokai Pink), who used it to fight as GekiChopper.
 * When the Gokaigers (bar Joe) became the Gekirangers while fighting Action Commander Zodomas' Zugormin.
 * When the Gokaigers became the Gekirangers in their fight with Cosmic Kenpō Master Pachacamac XIII.
 * When the Gokaigers (bar Don) became the Gekirangers in order to use the Fierce Ki Infusion against Action Commander Shieldon in a vein attempt to penetrate his shield.
 * When the Gokaigers became the Gekirangers while fighting Action Commander Zakyura.
 * As part of an all-white Gokai Change in the Gokaigers' fight with Makuu Prison Chief Ashrada.

After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. It is presumed that Ken received his key and became GekiChopper once more.

Roll call
After transforming into GekiChopper, Ken says, "Refined ability, the future cut open by one's self. 'Amazing Ability,' GekiChopper" (才を磨いて、己の未来を切り開く 「アメイジング・アビリティ」 ゲキチョッパー！).

Portrayal
Ken Hisatsu is portrayed by Sotaro (聡太郎). As GekiChopper, his suit actor was Jun Watanabe (渡辺 淳).