Akira is the Japanese goto guy on The Simpsons.  Need a Japanese guy that owns the local sushi shop, "The Happy Sumo?"  Akira.  Need a sensei?  Akira.  During his first appearance, Akira was voiced by George Takei, but has since been replaced by Hank Azaria, who does an impression of Takei.

Akira Quotes

Marge [about Homer]: Is he okay?
Akira: He feels no pain. Oh I'm sorry, my English is not so good. I meant to say he feels only pain

(Homer looks over the menu.)
Homer: There's got to be something I haven't tried. Huh? Hey, hey, what's this? Fugu!
Akira: (Gasps.) It is a blowfish, sir. But I should warn you that one-
Homer: Come on, pal. Fugu me!

The Simpsons Quotes

Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!

Son, a woman is a lot like a... a refrigerator! They're about six feet tall, 300 pounds. They make ice, and um Oh, wait a minute! Actually, a woman is more like a beer. They smell good, they look good, you'd step over your own mother just to get one! But you can't stop at one, you wanna drink another woman!

Homer