Still exploring a few options to create an NPC in my Pathfinder campaign. To summarize : a half-orc with all mental ability scores as low as possible for a newly created character (he is supposed to be dumb as rocks, nearly devoid of common sense and socially inept) with pyromaniac tendencies and who has means to deal good amounts of fire damage.
At first, the kineticist class seemed to be a good choice for him, but I would like to try something different and less reliant on supernatural powers (and also less mechanically complicated), and the underground chemist rogue archetype looks to be a great choice.
However, this archetype adds the character's intelligence modifier to damage dealt with splash weapons, and that would be clearly detrimental to my NPC.
Then can the character choose to not add an ability score modifier from a class feature if it would penalize rather than help him ?