I'm blaming Kat again for getting me inspired to make another version of Fierce. Well sort of, I did make a concept sketch of Thorn some months ago some time after Ruth was made, but she didn't look good. Kat just kind of kicked the inspiration to make Thorn again.

Thorn trades out her fire magic for thorns, but I like to think she might have poison magic too. Maybe made some sort of deal for that to happen. Considering Fierce isn't one for deals that'd be quite interesting.

Lore wise: I'm inclined to think Vengeance was killed much sooner than how it happened for Fierce. Maybe they killed someone important to her and she snapped, if she snapped she probably has hate, more than when Fierce met Ember and Chain.

Vasa might've not been able to ever discover all of their abilities before being killed by Thorn. I get some sort of feeling that after Vengeance and Vasa died Thorn fled her AU, maybe due to guilt or something. She probably wouldn't have met Ember or Chain though.

Would've met Ruth at some point but that's all I can think about.

Had to make a sketch with the other two for the heck of it.

Rose, Fierce, and Thorn. Wait that's not how it goes-

Anyway both, Rose and Fierce would be concerned probably, and Fierce thought she went through hell.