Ella the Eevee, art by fidchellvore, and here will be more about her as well as more definitive limits and abilities

Ella is a strong and very self minded individual that doesn't much care for keeping companions around for her own reasons. But personality wise she is stern, serious, and not very fond of joking around, especially on jobs. Her limits on jobs mostly depend on her mood and the pay to risk ratio, if the pay isn't enough to compensate for the job, she is not likely to take it on, as for what types, she will do most anything from her usual area. She tends to stick to bounties, hits, mercenary jobs, guardian, most where she isn't supposed to stay in a safe and peaceful area, she gets uneasy in those.

Ella can change her type, without evolving, through any known pokemon type due to the unstable evolution stones in her gauntlets, and whenever she changes the tips of her fur will change to match the type. Though some types don't grant a large power change, some allow for more physical buffs like higher jumps and slower falls for flying, or strength with fighting, but the type advantages to shift. But she is granted a basic moves from each as well as the special moves.
Bug type lets her climb easier as well as resist various poison effects and deal with sicknesses better.
Dark lets her blend in and shift the light around her, as well as a higher risk move of shadow walking to turn into a shadow for a short while.
Dragon allows her to have thicker skin and resist effects as well as basically a higher damage resistance.
Electric allows for minor abilities such as a taser style of effect or a higher power one like a local area power drain, if she gets enough energy it'll buff her more than it'll drain her.
Fairy allows for her to appeal to those around her, seeming less of a threat or allows her to talk her way through places.
Fighting allows her to hit harder and just become stronger overall. Hits harder, lifts more, everything.
Fire allows her to cast fire balls and flamethrower style attacks as well as a fire breathing ability.
Flying buffs her agility, things like speed, making her lighter, jump height.
Ghost lets her use a powerful ability of intangibility, letting her stay there and still be seen, but unable to get hit.
Grass lets her photosynthesize, taking in sunlight to heal herself and her mind, if using abilities too much.
Rock makes her a little stronger, but lets her hold her ground, not getting knocked back easily, and for higher power, lets her basically earth bend.
Ice lets her freeze things around her as well as allowing her to form ice around her to make weapons or defenses.
Poison is basic, her punches include a powerful poison effect as well as making her immune to poison.
Psychic allows for telepathy and mind reading of those close to her, as well as changing thoughts to those weaker minded nearby, and sensing for lifeforms.
Ground allows her to root herself, making her immobile, but while its active she's nearly immune to most attacks
Steel allows her to grow metal talons or blades from her hands or off the gauntlets to use as powerful melee weaponry.
Water lets her breath under water as well as create torrents of water that she can use or blast at her enemies, or allow for weak water bending.

While she stays normal though, she can make the stones give her buffed attacks, these hits can give her targets nausea, blindness, disorient, paralysis, making them feel hungrier, making them vomit their prey, making them digest their meals faster, and other lesser abilities. But she can't swap through these as much as she wants, especially if she is going to be using her abilities more. Swapping between a multitude of her types or continuously using higher power abilities causes her a great mental and physical strain that can cause her to lock out types for a few days in order to let them heal.

I hope everyone enjoys her