Mark Hamill

Mark Hamill is an American actor, voice actor and writer. Mark Hamill voiced Alvin the Treacherous in the first two seasons of DreamWorks Dragons: The Series. Alvin hasn't appeared since the Season 2 finale, Cast Out, Part 2. Though Art Brown has confirmed that the character will appear in the future. His most famous role is generally condsidered to be Luke Skywalker from the Star War films.

Trivia

 * Another incredibly famous role of his is the Joker from Batman: The Animated Series.