Anti-theist here. Pragmatically, I have a problem with all religions and the religious, though my opposition exists on a spectrum from "I disagree with you" to "We'd all be better off if you never existed." Essentially my stance is that the only path to enlightenment is through a vigorous search for, and dissemination of, the truth in all matters, and that the only way to determine what's true and what's not is through an honest, objective examination of evidence. So yeah, even though I don't have a grudge against certain non-harmful religious practises, I still oppose all faith-based thinking on a philosophical level.
My comic will eventually delve into the authoritarian nature of religion, and also the differences between collectivist and individualist ideologies, but both as underlying themes rather than anything too explicit. Mostly I'm hoping for it to be thought-provoking entertainment.