 This article is about a villain in Kamen Rider Ex-Aid and Kamen Rider Ghost.
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Template:Characterinfo Michihiko Zaizen (財前 美智彦, Zaizen Michihiko), also known as Dr. Pac-Man (ＤＲ.パックマン, Dokutā Pakkuman), is a villain in Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider. He is the leader of Next Genome Institute who brings forth a new Bugster Virus strain based on the famous video game character, Pac-Man. By using Gashacon Bugvisor, he can become the Genomes (ゲノムス, Genomusu).
Character History
Early Life
He, along with the other members of the Next Genome Institute, operated on Emu Hojo to spread the Bugster virus, on the request of Kuroto Dan. However, a large amount of the Bugster virus was released, infecting the group of surgeons and causing them to vanish in an instant. [A New Challenger Appears!]
Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider
At some point in time, the members of the Institute were revived as Bugsters. In the present, while assuming the identity of "Dr. Pac-Man", Zaizen created a new type of virus known as the Pac-Man Virus, in order to locate the strain of a new type of Bugster virus, which turned out to be hosted within Togo Kiyomiya, a high school student who is also the creator of the game Hatesate Puzzle. The virus from Togo spawned into the Hatena Bugster.
Using the Hatena Bugster's power to rewrite his DNA, Zaizen completed his plan of evolving himself into a more powerful being known as the Genomes. He also attempted to evolve Togo into a similar being, using the Gashacon Bugvisor stolen from Genm Corp., and had planned to mass produce the treatment once the experiment on Togo was complete.
Genomes would ultimately be destroyed by Kamen Rider Ex-Aid Double Action Gamer Level XX's Critical Strike. [Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider]
Legacy
Following Zaizen's downfall, the alias of "Dr. Pac-Man" would be taken by Parado as he interrupted Kuroto Dan's own plot to utilize the Ganbarizing Gashat as part of a game in which he provided Bandai Namco-based Gashats to the doctor Kamen Riders. [Kamen Rider Ex-Aid "Tricks": Kamen Rider Genm]
"Dr. Pac-Man" returns, holding three legendary Gashats.
Admitting to Taiga Hanaya that Emu Hojo was patient zero of the Game Disease, Kuroto Dan claimed that he was given it six years ago in an experiment conducted by Michihiko Zaizen. [A New Challenger Appears!] He neglected to mention, however, that it was he himself who first gave him the Bugster Virus a further decade prior. Dan would later confess to Emu that he had ordered Zaizen to extract the matured virus from him.[Engineered History!] The said virus is also revealed to be Parado. [We're Me!?]
Personality
to be added
Powers and Abilities
to be added
Genomes
- "Infection! Let's Game! Bad Game! Dead Game! What's your name?! The Bugster!"
- ―Transformation Announcement[src]
By using the Gashacon Bugvisor, he can transform into the Genomes.
Equipment
- Gashacon Bugvisor - Transformation device and weapon.
Behind the scenes
Portayal
- Michihiko Zaizen & Dr. Pac-Man was portrayed by Shiro Sano (佐野 史郎, Sano Shiro), who previously played Weeval/Makuu Prison Warden Ashurada
in Kaizoku Sentai Gokaiger vs. Uchuu Keiji Gavan: The Movie. As Genomes, his suit actor is unknown.
in 
Notes
- Michihiko Zaizen is the second character who uses the Gashacon Bugvisor to become a Bugster. The first one is Graphite.
- Genomes is designed by Niθ.
Appearances
- File:Icon-exaid.png Kamen Rider Ex-Aid
- Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider
- Episode 15: A New Challenger Appears! (flashback; archive footage only)
- Episode 22: Engineered History! (flashback; archive footage only)
- Episode 29: We're Me!? (flashback; archive footage only)
- Episode 30: Strongest VS Strongest! (flashback; archive footage only)
