Of what group is the character voiced by Marc Diraison the leader ?  
Marc Diraison:  He is best known as the voice of Guts in "Berserk". Berserk (manga):  Set in a medieval Europe-inspired dark fantasy world, the story centers on the characters of Guts, a lone mercenary, and Griffith, the leader of a mercenary band called the "Band of the Hawk".
the "Band of the Hawk".