My take on the Zootopia fandom's "fanon" character derived from the old sketch arts, Skye (and she can be found in-character in Closed Doors here, starting in Chapter 10: https://archiveofourown.org/works/2.....ers/47381635). This sketch I'm actually not that happy with, as her face makes her look more wolf than Arctic Fox, but luckily I've got more with her in it to practice on coming up. Per her persona in the story, a profile below:

Age (at start of series): 46
Species: Leucistic Arctic Fox
Profession: AOMISDOPS Special Agent
Weapon of Choice: The nearest mechanic's tool, or baton
Personality: Slick-witted and jovial, but with motherly tendencies (thanks mostly to her partner) and an iron will when it comes to what matters

Skylar (though she prefers her nickname Skye) is Jack Savage's senior partner in the agency and a balance to his dangerously professional outward demeanor. Where he's cold and to the point, this Arctic vixen has no issues making friends and sliding into conversations, taking on the persona she needs for any assignment with ease as well. Agent by profession, she's a mechanical engineer in hobby and loves tinkering with things, often being the one to fix any issues with equipment or vehicles that arise while out on assignment (particularly when away from civilization proper).
Skye recruited Savage early on in her own career during a mission, and often takes it as her responsibility to help him recover from the situation he was in at the time, which is what has helped propel him into fame (in the circles that care about rabbits in high places) while she remains somewhat unknown (despite what might be a higher skill level due to her slightly longer experience). In turn though, this has given her a great deal of clout over the stubborn rabbit as well as final say in many of their decisions, and when necessary she'll use it. Fierce in a fight and quick on her feet as well as good with mechanics, she's the epitome of the term "special agent" and knows it.