Frog

Frog was an actual frog in his childhood days, happily hopping about and snatching up bugs with swipes of his little frog tongue. But one day while he was relaxing in his pond in the warmth of the sun, he was scooped up in the mischievous claws of Psychedelic. As he watched her toy with concoctions and spells, he was suddenly picked up and flung into a great big pot! His form shifted and grew and he found his webbed feet had turned into claws! He was fascinated by everything she'd been working on. Psychedelic realized that she had accidentally created a sapient life-form, which wasn't her goal, although she wasn't sure what her goal had been in the first place. He became her apprentice, and to this day they practice ethically dubious magical experiments.