Oswald Cobblepot (Gotham)

Oswald Cobblepot is a petty criminal and the main antagonist to James Gordon in the TV series Gotham He is portrayed by Robin Lord Taylor.

Following a betrayal backfiring on him, Cobblepot's true evil potential is released and he begins scheming to get revenge and take over everything for himself, starting by taking advantage of two warring mob factions and playing both against each other. Due to this, he could be considered the true main antagonist of the show.

History
Oswald was formerly the personal assistant of nightclub owner and crime lord Fish Mooney before he betrayed her. He is barely known as the Penguin, a nickname he hates, until Fish describes him as a bird, specifically, a Penguin.

Gotham
Oswald, tired of being a "lackey" for Fish, then eventually sells her out to two pedestrinas for his will of freedom. Fish finds out and Carmine Falcone tasks Det. James Gordon to dispose of the traitor to prove Gordon is willing to play ball with the Mob. Gordon tricks his partner, Harvey Bullock into thinking he has killed Cobblepot by dropping him into an ocean after pretending to shoot him. He, however survives and brutally murders a fisherman for his sandwich, marking the beginning of a murder and crime spree for Oswald.