After tapping Ben McKenzie to play a young Commissioner Gordon, Fox continues to bulk up its “Gotham” cast, announcing classic roles including the Penguin and Alfred Pennyworth for the much-anticipated “Batman” origin series.

Robin Lord Taylor will play Oswald Cobblepot, or the man better known as DC Comics villain the Penguin. With the brains of a chess grandmaster and the morals of a jackal, Cobblepot is a low-level psychopath for gangster Fish Mooney, and hides his sadistic lust for power behind an exquisitely polite demeanor.

Alfred Pennyworth, Bruce Wayne’s butler, will be played by Sean Pertwee. A tough-as-nails ex-marine from East London, Pennyworth has loyally served the Wayne family. Now, in the wake of their tragic deaths, he’s fiercely protective of the young Bruce Wayne — the boy who will eventually become Batman.

Additionally, Zabryna Guevara has been cast as Captain Essen, Detective Gordon’s boss at the Gotham City Police Department Homicide Squad. Essen balances the two worlds of police and politics with a Machiavellian skill that’s as much corporate litigator as cop. Erin Richards will play Barbara Kean, the fiance of Detective Gordon (McKenzie). A sophisticated emergency doctor, Kean stands by her husband amid the corrupt world of Gotham. Richards is repped by WME, Magnolia Entertainment and Curtis Brown in the UK.

Bruno Heller penned the pilot script for “Gotham,” which explores the origin stories of Commissioner James Gordon and the villains that made Gotham famous. A young Bruce Wayne has yet to be cast, though Fox topper Kevin Reilly hinted that he will be featured in the drama. Project currently has a series commitment at Fox.