Keitaro Kikuchi/Paradise Lost

In an alternate story where Smart Brain and the Orphnochs won, Keitaro Kikuchi (菊池 啓太郎) is one of the members of the Human Liberation Army who became a brief user of Kamen Rider Kaixa (仮面ライダーカイザ) following Masato Kusaka's death.

Overview
In Kamen Rider 555: Paradise Lost, he briefly wore the Kaixa Gear, thanks to the Transform One-Shot serum that allows a non-Orphnoch to safely use it. But due to the effect of the serum, the Kaixa Gear is reduced to ashes.

Kamen Rider Kaixa
Kaixa "Complete!"

- Transformation announcement

Rider Statistics Rider Senses: Ability Parameters: Special Attacks:
 * Rider Height: 189 cm.
 * Rider Weight: 95 kg.
 * Hearing: 8 km.
 * Punching Power: 3 t.
 * Kicking Power: 7 t.
 * Maximum Jump Height: 30 m.
 * Maximum Running Speed: 100 m. per 6.3 sec.
 * Grand Impact: 5.5 t.
 * Gold Smash: 23.5 t.

Once transformation is completed, the Kaixa Armor has several key features in its design to protect the user. Like all gears, the Kaixa armor manifests when the Kaixa Driver generates Photon Blood, a glowing substance generates the soft Sol Foam suit, Sol Metal armor, and Fullmetal Lung chest armor via traveling through the two yellow Photon Stream's lines that give Kaixa greater strength at the cost of speed. The steams end at the Photon Terminals at the gauntlets and Power Anklet greaves, the right Anklet having an Energy Holster that the Kaixa Pointer can be connected to. The helmet is unique due to its Global Feeler antenna to link up to Smart Brain's networks and the X Finder visor that gives Kaixa incredible vision to see in darkness, giving the illusion of a glowing eye, and a limited amount of x-ray vision.

Appearances: Paradise Lost

Arsenal

 * SB-913B Kaixa Driver - Kaixa's transformation device.
 * SB-913P Kaixa Phone - A sideflip "swing" cellphone device.
 * Kaixa Mission Memory - A small metallic card key containing the information of the Kaixa Armor.
 * SB-913C Kaixa Shot - Digital camera-shaped knuckle-duster.
 * SB-913B2 Kaixa Pointer - binocular-shaped pointer which enables to produce an energy drill deathblow.
 * SB-913X Kaixa Blaygun - A special weapon that is both a pistol, a dagger and a lightsaber.
 * SB-913V Side Basshar - Kaixa's sidecar motorcycle that can transform in a robot-like Battle Mode.

Portrayal
Keitaro Kikuchi is portrayed by Ken Mizorogi. He is portrayed by suit actor Seiji Takaiwa in costume.