has the first actor won any awards?
Yes, MTV Movie Award.
Gerard Butler
That role earned him nominations for an Empire Award for Best Actor and a Saturn Award for Best Actor and a win for MTV Movie Award for Best Fight. 
when was the film 300 released? December 9, 2006 who are the actors? Gerard Butler, Rodrigo Santoro, Lena Headey, and David Wenham.
wiki:24584142
Gerard Butler [SEP] Introduction
He then was cast as the role of Erik, The Phantom in Joel Schumacher's 2004 film adaptation of the musical "The Phantom of the Opera" alongside Emmy Rossum. That role earned him a Satellite Award nomination for Best Actor. Butler gained worldwide recognition for his portrayal of King Leonidas in Zack Snyder's fantasy war film "300". That role earned him nominations for an Empire Award for Best Actor and a Saturn Award for Best Actor and a win for MTV Movie Award for Best Fight. He voiced the role of Stoick the Vast in the critically and commercially successful "How to Train Your Dragon" franchise (2010-2019).