I can clarify a bit. As an unintended consequence of reaching the $1000 goal for both Opti and Bull, we also got access to each level below the $1000 level. When I received the follow up surveys for both, I thought since Bull's fans were the ones who got him there, not me, I would kick the survey his way to do with the rewards what he liked. By far the coolest reward besides the NPC is the character portrait/PC included at the $500 level, so as a cool contest, instead of keeping it for himself, Bull gave the PC portrait away. It was him being cool, not trying to snub anyone who donated. Bull the Ork Decker will be an NPC, and some lucky Missions fan will have their mug as a PC portrait.
They gave the option for the PC/NPC/E-Book character to be the same or all three different, and I haven't decided how to pull that off for Opti yet (although I am running out of time).
Hope that helps.