Nathan Drake may be the coolest thief/archeologist/trained killer in a half-tucked shirt, but he learned all those skills from the master, one Victor “Sully” Sullivan. Sully adopted Nate to teach him all about stealing artifacts and shooting people, skills Sully picked up in his time in the Navy and as a freelance thief in his own right. An accomplished pilot with a love of fine cigars, Sully supports Nate every step of the way, usually keeping pace with Drake’s acrobatics, which is impressive considering he's, like, 300 years old.
Sully’s skills and determination give him great star potential, though his age and constant smoking stretches the believability of his ability to have adventures, so let’s turn back the clock. Let’s see the decades of adventure that Sully had before working with Nathan, having fun throughout the 70s, 80s, and 90s. Of course, it could also take place after he teams with young Nathan, allowing for co-op missions with Drake pushed back into the sidekick role, an interesting change in fortune.