Mothilda

Mothilda once was a normal moth, until she fell on a glowing cauldron full of a magic potion which turned her into what she is today; a giant sentient moth with an immense talent on defensive magic that she channels through her extensive collection of shiny crystals and trinkets.
She tends to get in trouble because of her insatiable curiosity for a world in which everything is new to her, or for saying strange things, though she doesn’t understand why those would bother other wizards…