My answer's a bit vague, I guess because he's young and hasn't fully figured out "who" he is yet.
It changes depending on my mood and the tone of what I'm writing. When he's condescending, he sounds like the lord from Braveheart that killed Wallace's wife. When he's quixotic, he sounds like Joaquim Phoenix in Gladiator. When he's trying to win over an audience he sounds like Robert the Bruce from Braveheart. Sometimes he sounds like Inigo Montoya from Princess Bride, or Arthur, King of the Britons from Holy Grail. The last letter he wrote was to an adventurer and was in the voice of Jaffar from Aladdin (oddly). His butler sounds like Hedley Lamarr in Blazing Saddles, and his unit captain was just some mix of Cockney and Irish, but he's dead now.
