Weeeell, I'm currently playing 3 characters, though Nox is currently unavailable. I'll give a brief summary below and then you can decide if any of them would suit your plans for Aero <3
Kin-Kin - Red Wolf -
Elemental master, self-proclaimed demigod and the caves' resident diva. She makes a good mentor thanks to her skill and confidence, but she can also be a mischievous tormentor if someone is quick to anger.
@Gabriel - Chinese Crested -

Watcher, plotter, incubator of disease. Gabriel is fiendishly intelligent but unfortunately, underdeveloped on an emotional level. It wants to learn all it can about the caves and those who inhabit them, including healing and rebirth. Just don't ask it for help, or it'll reclaim those favours later.