Turanga Leela is the most competent of the Planet Express crew, as the ship's one-eyed captain.  Leela thinks she's an alien from another planet, but eventually learns she's just a mutant from the sewers.

Leela is voiced by Katey Segel.

Leela Quotes

Farnsworth: (on the phone) Oh, how awful. Did he at least die painlessly? To shreds, you say. Well, how is his wife holding up? To shreds, you say. Very well then. (hangs up) Sad, sad, terrible, gruesome news about my colleague, Dr. Mobutu.
Leela: Was his apartment rent-controlled?

Donbot: Hello, we're the Robot Mafia. The entire Robot Mafia. We're here to steal your cigars.
Leela: You'll never get away with this.
Fry: Unless you let us live. Then you'll get off scot free.

Futurama Quotes

Farnsworth: (on the phone) Oh, how awful. Did he at least die painlessly? To shreds, you say. Well, how is his wife holding up? To shreds, you say. Very well then. (hangs up) Sad, sad, terrible, gruesome news about my colleague, Dr. Mobutu.
Leela: Was his apartment rent-controlled?

I like your style, Fry. You remind me of a young me. Not much younger, mind you. Perhaps even a couple of years older.

Zapp