Bowser

Bowser (クッパ, Kuppa) is a Koopa with Narcissistic Personality Disorder (NPD) and Asperger's Syndrome. Bowser struggles with appropriate social behavior and relationships. He once scored 140 on an online IQ test, hence he considers himself very intelligent. He goes to great lengths to show off his intellectual superiority. Bowser dresses very formally, no matter the occasion, as he believes "sophisticated attire befits [his] cerebral stature" and that it will increase his desirability to women.

The object of his desire is Peach, a young woman with whom Bowser wishes to form a romantic relationship. After many unsuccessful attempts at courtship, Bowser became frustrated with his unrequited affection and kidnapped her. He held her in his bedroom for several hours, lecturing and interrogating her about her reasons for denying him. The police ultimately located the pair, and whilst Peach did not press charges, a restraining order was filed which mandates that Bowser must not come within 100 meters of Peach.

After these events, Bowser became increasingly cynical and disillusioned with society, beginning to act in an anti-social manner. One acquired bugbear is a resentment towards other individuals with Asperger's Syndrome, whom Bowser considers to be naive, and inferior to himself. He joined Sonic's gang as an outlet for these feelings; he bullies and picks on autistic people to alleviate his own insecurities.

Quotations
"Did you know "sesquepedalian" is autological?" - To a stranger at a bus stop

"My concupiscent yearnings have been dashed by superficial demoiselles lusting after cretinous reprobates." - After a romantic rejection

"Every neutrino in my cerebellum is burning with antediluvian wisdom!" - Celebrating his first correct answer in "Trivial Pursuit"