I asked a similiar question in the general Pathfinder forums, but I have a follow-up question specific to organized play.
My home group is starting Pathfinder society tomorrow, and we are all new to orgnaized play. I was making my character and came across Trelmarixian the Black in the Pathfinder wiki. Can I be a cleric devoted to him in Pathfinder society?
My original question to the general forum concerned being a Neutral cleric of a Neutral Evil deity, since you can't be evil in organized play. Some people thought that you can only be true neutral if you're deity is true neutral but another guy said that was an old rule that was removed in Pathfinder RPG.
Since clerics are strongly influenced by their deity-choice I would really like a definitive answer on how cleric alignment works in Pathfinder society. I'd hate to have to scrap my character because I found out that he wasn't rules compatible.
And right now in PFS, your cleric can only worship a god listed either in the Core Rulebook or in the relevant allowed materials from Chapter 13 of the Guide.
Ok, so a cleric who worships a neutral evil deity CAN be neutral because it is one step away from neutral evil on the evil/good axis?
and
You can't worship Trelmarixian because he is in the Pathfinder Campaign setting and not the core RPG book?
You can't worship Trelmarixian because he is not listed as a legal deity in Chapter 13 of the Guide to Pathfinder Society Organized Play. What source he comes from is less an issue than that he didn't make the cut.