Flamingo first appeared in Grant Morrison and Andy Kubert's "Batman" #666. In the comics, he is an emotionless killer who eats his victim's faces after he murders them. A master assassin, he's proficient in all kinds of firearms but prefers a spiked chain. In "Gotham," he'll quickly prove himself to be a tricky foe for Jim Gordon (Ben McKenzie).
Castillo's past credits also include "Special Correspondents," "Staring in the Sun" and "Sweets."