Apophis

Apophis is the shopkeeper of the Violet Market in Blackfair. He is good friends with Osiris and is one of the few masters in Grimhaven that knows his way around alchemy. Whether it’s temporarily stopping time or summoning a hellhound, he can create an elixir for just about anything, if he knows how to prepare it.

Trivia

 * With Apophis being what looks like a demon and being able to summon hellhounds with potions, it's safe to say that Hell is canon in the Undertronic universe.