According to the Songs of War Wikipedia, Galleous Sendaris is a major character in the series. He is a Ardoni of the Sendaris clan (aka the blue ones) who lives in Ataraxia as a skilled blacksmith. One important note is that he is the older brother of Thalleous Sendaris, where he looks and sounds the exact same as his brother, just with a darker shade of blue. 

Even though in the original series, both Thalleous and Galleous share the same voice actor, I am making Galleous a separate audition so I can make the cast and crew a bit larger.

His vocal range should be either a male young adult, male adult, or male senior. He is around Thalleous Sendaris's age, so he should sound similar to him. Even though Thalleous Sendaris has a warrior tone in his voice, Galleous should sound like a soft toned wise sensei, considering that Galleous is smarter, and spends most of his time creating weapons and training students.

His original voice actor is "Carl G. Brooks".