Yes, he is a major character in the single player campaign along with Gary Oldman, Mark Strong, Gillian Anderson, and others who provided voice acting and facial performance capture.
Yes. He's joined by Gary Oldman, Gillian Anderson, Mark Strong, Andy Serkis, John Rhys-Davies, Ben Mendelssohn, Liam Cunningham, and many others in Squadron 42, the story-based spinoff to Star Citizen.