Karin Sugita

"“If it doesn't concern this mission, then you can just keep it in my file cabinet or up your ass if you like.” —Karin" Karin Sugita (杉田 夏鈴) is one of the main characters of Tetsujin-28: (Un)Fortunate Son. She was introduced as the Taimanin that was tasked with investigating missing persons cases of several married ex-Taimanin. Karin is described as a person with a cool and calculated personality with many years of experience and a strong sense of responsibility. She was able to solve many difficult cases using her calm and accurate judgement. Due to her past achievements, she is considered highly elite among the Taimanin. Her investigation leads her to Kana Yoshizawa, who she suspect will be targeted as the next victim of the abductions. She wields a pistol and a kunai attached to a wire.

Appearance
Karin has dark blue hair and purple eyes.

Personality
Karin is a stoic, intelligent and collected individual with a calm demeanor who would often act unfazed to most situations around her. Karin is known to try to approach her investigations as objectively as possible, and would rarely express her emotions. Due to Karin's stone-cold demeanor, she would unintentionally come off as callous, even though she just wants to do her investigations effectively and does care about protecting innocent lives.

Although Karin does have a calm and cool personality, that doesn't mean that she is emotionless. This is best displayed when she is captured by the "Mysterious Man", where Karin showed clear signs of distress and panic during her predicament. Despite her best attempts to hold out during the sexual torture that was inflicted on her, Karin's stern attitude ultimately cracked.

After being "broken" and brainwashed by the "Mysterious Man", Karin became an obedient slave and his spy within the Taimanin. Like most other women that are "broken" by the demons, Karin's personality change to that of a nymphomaniac. She would complete her tasks in hopes to be "rewarded" by her "masters", such leading her investigation on the missing ex-Taimanin to a dead end or falsifying evidence. In her mind broken state, Karin ultimate goal is to eventually be impregnate by the demons and spend the rest of her life giving birth to their children, which the "Mysterious Man" and his follower refuse to do for the time being as her pregnancy would only draw suspicion. Despite her lust, the brainwashed Karin is capable of hiding her lewd desires and can act as she would before her brainwashing, making her an ideal spy for the demons. However, much like in Shiranui Mizuki's case with Ryuuji, Karin was able to return to her old self after her "master" Duncan and his superior and true mastermind, the Space Demon King, were defeated.

Etymology

 * The name Karin means "summer" (夏) (ka) and "bell" (鈴) (rin).
 * Karin's surname Sugita means "cedar" (杉) (sugi) and "field, rice paddy" (田) (ta).

Trivia

 * It is hinted a few times that Karin, along with Shizuru Kousaka, were the veteran Taimanin that Asagi Igawa originally wanted to assign the Matoi Mission to, before the mission was given to Yukikaze Mizuki and Rinko Akiyama. Ironically, had the veteran Taimanin been given the assignment, they would have likely realized the mission was a set up due their experience and analytical skills, whereas the naive Yukikaze and Rinko allowed themselves to be capture and fell right into Under Eden's trap.
 * After Karin was captured by "Mysterious Man", she ironically became a victim in her own case for the missing ex-Taimanin. However, she was the first victim to the abductions that did not fit the kidnappers' MO. For example:
 * Karin was an active Taimanin during her abduction while on the other victims where retried ex-Taimanin.
 * Karin was currently single during her kidnapping while the ex-Taimanin where all married women.
 * After her brainwashing, Karin was allowed to return to her normal life while doubling as a spy for the demons and the other victims in the case were forced remain in the custody of their kidnappers.