A random thought that came to me that I don't think anyone else has talked about (or if they did, I didn't see it). Spoilers for Knights of Guinevere pilot.
So, during the bit where we learn how Frankie lost her teeth, Sparky said, "Fight back proper". He was more pissed that she was biting him than her fighting back. Him pulling her teeth isn't punishment for her fighting him or disobeying him, but for the biting.
Hell, the fact she is able to dodge as well as she did while having to deal with the dead weight of Guinevere until she did start fighting back showed that 1) she and Sparky have fought enough times that she knows how he moves and knew she wouldn't keep up while needing to protect Guin, 2) she is strong enough that if she actually fought him, he would be hurt pretty badly, 3) Frankie doesn't like fighting but will if something or someone is on the line.
Some of you might point out that 1 and 3 contradic, but if I see it as 'toxic father figure and daughter who work together' relationship where she grew up with him probably throwing away her Park Planet merch or her projects, they fight verbally then physically.
It hasn't been confirmed if Sparky is her father or not, but he is at least her father figure for long enough that he has pulled her teeth out before. Wouldn't surprise me if he is her uncle or a friend of her parents who had to take her under his care for one reason or another.
Anywho, sorry for the random, disjointed post at 2:40 am
