Pacer appears to be a mid/late-30s human male, often dressed in the uniform of a personal driver: black suit and tie, white or gray shirt.  Over the years, his profession has taught him the value of knowing when to stay quiet, when to make small talk, and when to ask questions.  His face can seem like a mask: Determined to stay neutral, Pacer fights to keep his emotions from revealing themselves.  Like a lot of drivers, he's a caffeine-fiend, and usually found with a cup of soykaf in hand.  He loves a cup of real coffee, when he can afford it.