The Riddler — Alter ego of a forensic scientist Edward Nygma.
He has brown eyes and is brown-haired with neat short hair. Tall, thin, wears glasses. Clothes: green classic suit, hat. 
Character: Witty, arrogant, immoral, artistic demeanor, sadistic, misonthropic, obsessed with riddles, high intelligence, cunning, manipulative. Split personality. Loves mind games. Deep internal conflict. Has a soft spot for Oswald Cobblepot. Instability and tendency towards drama. 
[The Riddler from Gotham.]