Cal

A [retired] surgeon and doctor, he's had his beef from the past. He used to be a well-known doctor and used to be looked upon near his work-field. The moment he started focusing on things that weren't science and borderline sorcery, all so he could achieve ultimate power, things started to go downhill...

his patients started giving complaints, starting from ill-prescripted medicin,, to missing organ parts, and to the point where they'd end up going missing on odd events...

he'd end up going hellbound, a rogue god in his point of view. now he's a myth and tries to do his dirty deeds by using magic and using his lab projects (whether it'd be a new formula of some sorts, a chimera, ect.), you'd probably want to avoid crossing paths with him...