Seth Green

Seth Green is one of the creators of Robot Chicken, where he also voices many characters. He played Scott Evil in the Austin Powers movies, Oz in Buffy the Vampire Slayer, Tyler in Ticks, Duane in Rat Race, Napster in the Italian Job and voices Chris Griffin in Family Guy. Tends to play The Stoic.

Has also recently voiced Ace Pilot Jeff "Joker" Moreau in Mass Effect and its sequels, as well as the main character of Mars Needs Moms (motion capture/narration only).

His IMDB page is really impressive.

This actor shows examples of:

 * Adorkable
 * Dawson Casting: Inverted for the Austin Powers films, where Scott Evil was actually about 5 years older than Green. But Green has almost always played characters younger than him, he was born in 1974 but his boyish looks keep him looking in his mid-20's, even when sporting a beard.
 * Fiery Redhead
 * ~Hey, It's That Guy!~: Since he's in pretty much everything...
 * Ink Suit Actor: The resemblance to Joker is uncanny.
 * Nerds Are Sexy
 * Older Than They Look: He looks, acts, and dresses like he is in his later teenage years to early twenties. It really doesn't help combined with the fact that he's about 5 foot zip.
 * One of Us
 * Seth Green is a brony, your argument is invalid.
 * Promoted Fanboy: He went from collecting Star Wars action figures to working personally with George Lucas on the Robot Chicken Star Wars special and providing a voice on Star Wars the Clone Wars.
 * Teens Are Short: Rare male example