The film contains no dialogue, however the character will communicate entirely through vocalisations, and expressive sounds to convey his pain and emotion.

Beginning his journey through limbo, he is gaurded, bitter, worn down, and wounded. His voice should reflect someone trying to stay composed, trying to hide their pain, trying to resist succumbing to their wounds. He should sound a bit gruff, tense, breathy, and gaurded, trying to hold back his pain rather than dramatising it. 

His vocal delivery will help ground the film and add weight to the character.