Marcus, from Ultima Underworld II
Marcus was the best knight of the kingdom of Fyrna on the world Tarna, until he got captured.
Prior to Ultima Underworld II, he was captured together with his prince, Felix, in an ambush led by the Goblins under Freemis (the Goblins work for the Guardian). Felix was forced to watch while Marcus' tongue was cut off.
When the Avatar met him in the Prison Tower, Marcus was very grim over his lost voice and couldn't help the hero. However, after Garg had slaughtered all the Goblins in the tower, he left together with Felix, to join the resistance.