What stats are used in the various attacks you see your allied NPC make? Like healing, or that fire attack? That way you can better decide what armor to equip for one.
Do NPC's abilities upgrade like your own tech tree, or are they static?
What element does each color stand for when you see the damage?
Roald doesn't have a healing attack, he has a enchantment that protects and boosts healing, but since it doesn't actual heal or do damage, stats don't seem to matter.
How about whats her name and her attacks? Any NPC attacks that use speed?
Felicity's attacks would be based on speed, I'm assuming. (all her attacks are physical. This is evidenced by the red background on the Knifed status effect, and the fact all her armour when you get her gives physical piercing.)
The armor she's wearing doesn't give you any evidence of what she is actually based on. If you take off the armor, her stats actually lean heavier toward strength.
I know she has Slash, which is speed based, but I haven't messed with her enough to tell about Knifed and stuff. Based on what I have done, I think most of the moves are strength-based. Or maybe both.