
Demacian Katarina (OC)
The fact that we don't have a Demacian Katarina / Noxian Garen skin is CRIMINAL.
They're star crossed lovers, Riot. The idea is right there!!
Anyway, this is just what if the Du Couteaus were a Demacian family. I imagine them to be a noble house of Mageseekers with Marcus as the head of the house. All three siblings were trained to be primary Mageseekers or at the very least support them. Like canon, Cassiopeia went more into the political side of things along with a dose of espoinage.
Talon tracks and hunts mages down.
Katarina was suppose to do the same but in her youth, due to her reckless behavior, she failed a mission allowing multiple mages to escape. Katarina gains her scar either during that fail or as a form of punishment from her father afterwards.
Later, Katarina left the Mageseekers to pursue becoming a ranger as that suits her skillsway more. Although Marcus doesn't like his daughter being anything other than a Mageseeker, he very much prefers to keep Katarina out of Demacian politics because of her temper.
She doesn't have her own animal companion because she doesn't feel like she needs one to do her job. If she works with rangers who do have an animal, she's happy to use their strengths. If she were to have a companion, it would most likely be a type of feline.
On missions, Katarina is just like in canon: Flashy, agile and very risky which puts her at odds with just about everyone since rangers pride themselves in their stealth.
She meets Garen while out on a scouting mission, getting captured and forced to work with him like they do in the movie storyboards
Feel free to add more stuff :)