Sendea

Appearance Thin, petite woman with blonde hair that's usually up in a bun. Bright green eyes, eyeglasses (which are not actually prescription what a nerd). Likes to dress in cute, frilly clothes and has a very cheerful, friendly demeanour.
Abilities Senses magic in others. Casts general magic from HP with a focus on powerful elemental stuff that's probably going to get her very hurt without a constant source of mana renewal. Can alter appearance more or less freely.
About Is literally made of magic! Her body appears reasonably humanlike, but it's basically an elaborate hard light illusion built around a magical core.

Basically she'll act super sweet and bubbly and friendly but she will destroy you if she thinks there's a good reason to