Masato Kusaka/Zi-O

In 2003, was , until the creation of Another Faiz erased the Rider from history as well as undoing his death. After the reboot he returned to aid Daiki Kaito.
==Biography==
===Kamen Rider Zi-O===
====Switch On! 2011====
Karin tries to relax on a rooftop, only for the man in the brown coat to run towards her and attempt to choke her. This man is revealed to be Masato Kusaka, who then tosses her off the roof, which Sougo, Geiz and Tsukuyomi witness from a hallway window nearby. They race to what they fear will be Karin's body, only to find she has been saved by Another Fourze.
Meanwhile in 2018, Tsukuyomi finds the abandoned building and enters it, only for Masato to follow her from the bushes. She finds Karin sitting on a bed and tries to convince her to leave but Tsukuyomi is suddenly ambushed by Masato. She draws out her Faiz Phone X and threatens to fire, only to be saved by a stranger who tussles with Masato.
Later Masato finally manages to get the stranger he's been fighting off of him, only to be revealed that it is the one person in the world Masato Kusaka hates the most...Takumi Inui aka Kamen Rider Faiz!
====555・913・2003====
Another Faiz reverts back to Another Fourze, using the Gatling Module to attack Zi-O and Geiz. Geiz summons the GhostArmor and the Parka ghosts attack Another Fourze, only for him to retreat and escape. Zi-O is still baffled by the fact that the Another Rider has two of the Heisei Kamen Riders powers at the same time.
Back in 2018, Masato Kusaka is wondering what his hated rival Takumi Inui is doing, to which Takumi responds he is protecting Karin by stopping him. The two begin to fight again as Karin runs away with Tsukuyomi chasing after her, only to lose her once she is outside the building. Masato grabs Takumi upon losing Karin and tells him this has nothing to do with him and walks off.
At an apartment complex, the other Libra student is celebrating her birthday with her friends, only for the boy to attack her as Another Fourze and chase after her when she tries to run. Karin tells "Sakuma" to stop and lets the girl get to safety. Karin begs Sakuma to stop hurting others for her sake. Masato appears and grabs Karin, planning to kill her to put an end to this. Sakuma beats up Masato and prepares to snap his neck after headbutting him, only for Takumi to rush in and save Masato and get punched in the chest. Masato wonders why Takumi saved him, with Takumi answering that while he hates Masato sometimes, he still considers him a friend even though he hates to admit it. Sougo and Geiz arrive, but Sakuma flees, determined to keep Karin alive. Takumi gives Sougo his Faiz Ridewatch so he can stop Sakuma, but surprisingly Sougo entrusts the Ridewatch to Geiz, who heads off to stop Sakuma.
After defeating Another Faiz / Fourze, Masato leaves, with Takumi trying to follow him, but Masato won't accept it and stops him as he quietly walks off. Sougo smiles as he thinks that he has friends in Geiz and Tsukuyomi, though Geiz awkwardly feels uncomfortable about how Sougo is looking at him and walks away. Tsukuyomi asks Sougo once they get home if he returned the blank Ridewatches to Fourze and Faiz, to which a panicked Sougo runs out to return them to their rightful owners.
====Kamen Rider Zi-O NEXT TIME: Geiz, Majesty====
Kusaka returns in Geiz, Majesty, his resurrection due to the events of Kamen Rider Zi-O. Despite this, he retains his powers as Kaixa, as well as memories from both 555 and (implicitly) Zi-O at once.
Kusaka initially appears as Kaixa, assisting Daiki Kaito against White Woz and his subjects. Disapproving their enemies' heinous actions, Kusaka fights a Kasshine and easily overwhelms it. Before Kusaka could finish it off, the Kasshine uses a nearby Sougo as a shield, forcing him to stop. Taking advantage of the situation, the Kasshine then escapes with its hostage via wormhole. After the battle, Daiki bids Geiz Myokoin and Tsukuyomi farewell before teleporting Kusaka and himself through a dimensional wall. 
Once escaped, Kusaka deactivates the Kaixa Gear and Daiki thanks him for his help. Noting it to be no big deal, Kusaka asks what Daiki's true motives were, feeling that he had previously met Geiz before, as well as questioning whether Geiz was also a Kamen Rider. In response, Daiki states that Geiz does not yet have the will to transform, rhetorically asking Kusaka about the will he had when becoming Kaixa. Scoffing, Kusaka refuses to answer Daiki's questions, wiping his hands as per usual.
Masato Kusaka in Next Time.png
Diend & Kaixa in Next Time.png
==Personality==
It is shown that Masato is not completely bereft of any positive and empathic qualities. As a result of a time paradox due to the creation of Another Faiz, and the fact that said Another Rider tried to keep his significant other alive, he is more willing to kill Karin out of mercy to relieve her of the life imposed to her by Sakuma. However, this doesn't change with the fact that his hostile relationship between him and Takumi is still intact.
==Forms==
Kamen Rider Kaixa
;Rider Statistics
*Rider Height: 189 cm.TV Asahi. (2003). Kamen Rider Kaixa.
*Rider Weight: 95 kg.
;Rider Senses
*Hearing: 8 km.Kamen Rider Official Data/Perfect File.. (2003). Masked Rider Faiz 1. p. 7, 10, 15, 17. ISBN 978-4197605378.
;Ability Parameters
*Punching Power: 3 t.
*Kicking Power: 7 t.
*Maximum Jump Height: 30 m.
*Maximum Running Speed: 100 m. per 6.3 sec.
;Special Attackshttps://www.kamen-rider-official.com/zukan/forms
*Grand Impact: 5.5 t.. (2003). Masked Rider 555: Complete Works. First Volume. p. 16, 31. ISBN 978-4091014917.
*Gold Smash: 23.5 t.. (2004). Masked Rider 555: Complete Works. Second Volume. p. 17, 23. ISBN 978-4091014955.
Once transformation is completed, the Kaixa Armor has several key features in its design to protect protection to the user. Like all gear, 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 Streams lines that gives 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 a Energy Holster that the Kaixa Pointer can be connected it. 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: Kamen Rider Zi-O NEXT TIME: Geiz, Majesty
==Equipment==
===Devices===
*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.
===Weapons===
*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.
==Behind the scenes==
===Portrayal===
Masato Kusaka is portrayed by .
==Notes==
To be added.
==Appearances==
* Kamen Rider Zi-O
**Episode 5: Switch On! 2011
**Episode 6: 555・913・2003
***Episode 6.5: The Secret of Fourze 555
**Kamen Rider Zi-O NEXT TIME: Geiz, Majesty
* Three Dark Sisters Presents: Kamen Rider Gotchard Unfinished Plan 
**Episode 9: The Time is Heisei 36! Supplementary Plan VS Unfinished Plan 
Category:Antiheroes
Category:Zi-O Characters
Category:555 Characters
Category:Civilian
Category:Zi-O Riders