Ok, so I've built a fun character which is a whip wielding summoner with a 'gimp' Eidolon who worships Zon-Kuthon.
It's a character I built ages ago but I have been waiting for a chance to use her. I'm not sure if it's right for this campaign but I have thought of a backstory that I think will suit it despite being lawful evil. I just want to check how viable is it.
The backstory I've thought of is that she was a member of a secret zon-kuthon cult. The leader of the cult (who was also her lover) was murdered (love lost trait). Without strong leadership the cult fell into disarray and was quickly discovered by the authorities (and slaughtered)
In my mind this gives the character a hook into the story and a reason to stick around & fight the authorities. The character will also choose revenge over her religion if they ever conflict.
Could this work or should I just play something else?
you should probably play something else. this sort of character would probably support the BBEG of the campaign. and as was mentioned is really close to a particular NPC.
ultimately, this campaign probably plays best with PCs who are motivated by compassion. I can't really see a Kuthite in that vein.
It's an interesting concept, but this probably isn't the AP for it. play a good character. it'll be easier for everyone.