Brain

"Why do only the most rude and unruly troublemakers seem to evolve?"

- Brain's complaints on evolved Roidmudes

The Brain Roidmude (ブレンロイミュード), known simply as Brain (ブレン), also as known as Roidmude 003 (ロイミュード００３), is one of the commanders of the Roidmudes. He is later named by Mitsuhide Nira as Sou Noumi (能見 創), a consultant from the Paranormal Science Institute.

Profile

 * Motif basis:
 * Low-Class: Bat
 * Advanced: Brain, Academic dress
 * Fusion Evolution: Dorobo (Japanese thief), hook
 * Super Evolution: Brain, Academic dress
 * Human form/synchronize:
 * Sou Noumi (primary disguise)
 * Mitsuhide Nira (仁良 光秀) (Neo Viral Core synchronize)
 * Destroyed by:
 * Kamen Rider Drive Type Tridoron's TriDrop, Kamen Rider Deadheat Mach's Heat Kick Macher, and Kamen Rider Chaser's Chaser End (first body)

Character History
Roidmude 003 was among the three initial trio of Roidmudes murdered their creator, Dr. Banno. They then proceeded to the home of his colleague, Krim Steinbelt, who aided Banno in creating the Roidmudes with his Driviar Cores, to kill him as well. However, unbeknownst to the Roidmudes, Steinbelt's consciousness was uploaded into the Drive Driver upon his death by their hand.

15 years later, all 108 Roidmudes emerged and launched an attack on human civilization which would be known as the Global Freeze. 003 was also the commander and part of the Roidmude onslaught in Tokyo which was stopped by the Shift Cars and Kamen Rider Protodrive. Both Brain, Heart, and Freeze (001) acquired Proto-zero, the defeated Roidmude that sided with Krim Steinbelt and rebooted him (altered his memory as a result) as the Roidmude guardian Mashin Chaser.

Six months later, Brain and Heart remained in Japan to lead Roidmudes stationed in the country. After witnessing Proto-Zero/Protodrive's successor, Shinnosuke Tomari/Drive, Brain became aware of this enemy and for once, poisoned him altough he survived. When Mashin Chaser briefly allowed Drive to save the whole city from Volt Ghost's blackout plan, Brain punished Chase but this unintentionally leads him to discover his number, as well as a small portion of his memories. As Chase and everyone wondered the mystery of the formation of Ride Crosser, Brain revealed that Chase had been Protodrive and finally tried to put an end to him until he was stopped by Heart who let Medic reboot Chase again. Witnessing the rebooted Chase's loyalty as a success, he decided to join in the battle until he was burnt alive by Mach Moerl.

Brain gives the other Roidmude commanders the data of the Special Investigation Unit. Figuring that Drive is among them, he planned to attack and/or expose Drive's civilian identity but all of them sarcastically reject it, rendering him nervous. Witnessing Medic's success had been risen up to the point of correcting Chase's brainwashing and founding the Reaper Legion. Envious of her success, Brain contemplated to find her weaknesses even to the point of sabotaging Chase after his remodeling by Medic via weakening his firewall. Though the strategy was a little success, Medic found out about the whole trick and threatened to eliminate him if he tried to get in her way again.

After being bested by Medic, he later aligns with Freeze, often calling him as "Teacher", and introduced himself to the police force as Sou Noumi. He later formulated a scheme, by convincing Go Shijima to meet 001 but declined. As he falls to the ground and seemingly to get the upper hand by a desperate Kamen Rider Mach, the Roidmude suddenly took out his iPad, revealing a strange glowing blue screen for Go to see, turning him into the newest part of their faction. In fact, however, Go's memories was altered by 001 to make Go as their trump card in their plans upon to defeat the Kamen Riders, until Go revealed that he is immune to the effect and steals Brain's tablet to rescue his father.

Nira/Thief, with Brain in synchronization targets Yukari Kasawara, one of the eyewitness of Eisuke's death until the Kamen Riders rescue her though they did successfully manage to poison her. Nira and Brain later framed Shinnosuke for trying to take the lead of the Roidmudes and with Special Investigation Unit being backing him up. Though Shinnosuke escapes with the help from his friends, but Nira/Thief faces him instead and nearly gets himself killed by Drive and Chase, had Brain not using his Super Evolve form. Brain left the injured Chase, telling the latter that he would be a part of a bigger plan that the Executives are constructing.

Personality
As his name suggests, Brain acted as the tactical leader of the team. He seemed to be the type that is of the "insufferable genius", as he is easily irritated, like how most of the evolved Roidmudes are, to him, those with a "rude" personality, preferring those that are loyal and wise like him. Aside from his cold personality, he is also calculative, as shown he could simply drip a venomous neurotoxin which powerful enough to kill Drive, had he not been using the Mad Doctor Shift Car.

"I must redeem myself by any means necessary! How dare there be someone more useful to Heart than me?! Damn you Medic!"

- Brain gets nervous.

Ironically, despite his brain motif and cool headed outlook, he can easily become nervous whenever someone (particularly Medic) does a better job than him. This is displayed in several occasions, for example when Medic did a better job at reprogramming Chase by altering a portion of his base program, thus earning Heart's respect. This results in Brain developing a sense of jealousy towards Medic, and constantly trying to find flaws in her personality in order to redeem himself and regain his comrade's respect. Brain also has a habit of taking out his handkerchief whenever he becomes nervous. It is implied that he treasures his possessions a lot, and losing them would severely affected his emotions.

According to Freeze, Brain's special emotion is "envy".

He also has shown signs of being somewhat sadistic, if his laughter when pitting Mach against Drive and Chaser was any indication. Of course, this is similar to his human synch, Mitsuhide Nira due to both having huge jealousy for their rivals.

Portrayal
Brain is portrayed by Shota Matsushima (松島 庄汰). As Brain Roidmude, his suit actor is Daisuke Satō (佐藤 太輔).

Etymology
His human identity's name pronunciation Noumi Sou is a homonym of the Japanese word No Miso (脳みそ). "Mi" is also a part of "mitsu" (みつ), another way of pronouncing "3", which is Brain's original number designation.

Appearances

 * Kamen Rider Drive
 * Episode 2: What is a Kamen Rider?
 * Episode 3: Who Stole the Woman's Smile?
 * Episode 4: What is That Prideful Chaser Thinking?
 * Episode 5: What Are the Steel Robbers After?
 * Episode 6: Who Does the Warrior Fight For?
 * Episode 7: How Was That Decisive Moment Captured?
 * Episode 8: What is the Secret That Dwells in the Heart?
 * Episode 9: How Can I Get Used to the Cool Body?
 * Episode 10: What Is in the Belt's Past?
 * Episode 11: Who Can Prevent the Dark Christmas Eve?
 * Episode 12: Where Did That White Kamen Rider Come From?
 * Episode 13: Why Won't My Little Brother Put On the Brakes?
 * Episode 14: Who Is the Black Shadow Chasing Her?
 * Episode 15: When Will These Feelings Reach You?
 * Episode 16: Why is Rinna Sawagami Nervous?
 * Episode 17: Who Will Control Deadheat?
 * Episode 18: Why is Lt. Otta Following That Guy?
 * Episode 20: When Did Kyu Saijo Become a Roidmude?
 * Episode 21: What Can Be Spoken About the Irregular Dead?
 * Episode 22: How Can I Use the F1 Body to Fight?
 * Episode 23: Who Can Stop the Hoax Smile?
 * Episode 24: What Can Keep Mach Running?
 * Episode 26: Where is Chaser Going?
 * Episode 27: What's Go Shijima's Reason to Fight?
 * Episode 28: Why Were the Families Targeted?
 * Episode 29: What Really Happened to the Robbery Event?
 * Episode 30: Who Reveals the Real Criminal?
 * Episode 31: Why Did the Important Memories Disappear?
 * Episode 0: Countdown to Global Freeze
 * Secret Mission Type TV-KUN: Hunter & Monster! Chase The Mystery of The Super Thief!
 * Kamen Rider × Kamen Rider Drive & Gaim: Movie War Full Throttle
 * Shuriken Sentai Ninninger Vs. Kamen Rider Drive Spring Vacation Combining Special
 * Secret Mission Type TOKUJO
 * Episode 1: How Were the Special Investigation Unit Selected?