Benham is a Sealed Human. Fed lies about the universe through his suit, he is a wolf in sheep's clothing who is focused on "side quests" (Really, he's just a mercenary taking jobs from random aliens). Bold, young, and a little too obsessed with his role in the "pack". 

The designs for Sealed Humans are inspired by Warhammer suits, and they are convinced they are just gaming in a simulation. I do imagine he sounds similar to Pedro Pascal, but feel free to interpret his lines as you wish.