This character is simultaneously our protagonist and our narrator ! He's telling the story from his perspective.

His voice has a deep, mysterious quality to it. Not too melodic/smooth because he's in his 40s as well. He knows more than he lets on, he's often playful with his word choice / storytelling; he wants the player to solve the puzzles but also teases them on certain choices.

The client describes his voice this way: 

"Tone: Deep, very Slightly raspy, with a subtle whisper at the end of some phrases to convey a mysterious, seductive feel."

It's important that he doesn't sound too caricaturized however, he should still be taken seriously. He has some kind of suspicious past, and it shows in his voice tone.