Masato Sotoumi

is a doctor who was used by Chic to find test subjects for the Chimera Driver. When Sotoumi is no longer of any use to him, Chic possesses his body.
==History==
At some point, Sotoumi was ambushed by Chic, who put the doctor under his control. Sotoumi then began requesting volunteers for testing the Chimera Driver, which he advertised as a new experimental drug that activates parts of one's genes in order to strengthen the body. Ryu Mukai and Shinta agreed to participate along with three others. Sotoumi arrives at the meeting place along with Minami, Hakim, and Tony. He reveals to the participants that the "drug" is actually the Chimera Driver, and the test is to see who can become a Kamen Rider. Shinta is the first to volunteer, and takes the Chimera Driver and Twin Chimera Vistamp from Minami. He attempts to transform, but instead experiences painful shocks. Tony then removes the Driver and gives it back to Minami before he and Hakim drag the man away. Sotoumi announces that the trial is cancelled, but Ryu asks for a chance as well. The doctor agrees, and Minami hands the Driver and Vistamp to Ryu, who successfully transforms into Kamen Rider Chimera. 
Ryu later confronts Sotoumi after Shinta transformed into a demon. Sotoumi apologizes and says that it shouldn't happen to him, but Ryu leaves with the Chimera Driver. Tony and Hakim prepare to go after him but are stopped by Azuma. The two men fight him, but are quickly defeated. In response, Minami fires her handgun at Azuma, who is unaffected due to his regenerative abilities. He then runs past Minami and grabs Sotoumi by the neck. Sotoumi quickly explains that he was under a demon's control. Chic then arrives and possesses Sotoumi's body before offering to help Azuma restore his immortality using the Chimera Driver.
==Personality==
To be added
==Behind the Scenes==
===Portrayal===
Masato Sotoumi is portrayed by , who previously portrayed (NinjaRed) in and in .
==Notes==
*To be added
==Appearances==
* Kamen Rider Revice
**Kamen Rider Revice Movie Spin-Off Delivered Drama: Birth of Chimera
**Kamen Rider Revice: Battle Familia 
==Navigation==
Category:Revice Characters
Category:Villains
Category:Good turns evil
Category:Special-exclusive Characters
Category:Special-exclusive Villains
Category:Deceased