It's an Incubus.

The doors gently creek open as a dark figured entered the room, the form reveled itself as a muscled man with dark violet scale-like skin, And just as naked as Guin.

"Sorry for the wait, gem, Had to deal with another of the master's pets..." The incubus said chuckling. "But just to refer, You are my top priority."

"Who are you!? What is this place?" Guin said pulling against his restraints.

"Answering your questions is boring, So I'll think I'll do this instead..." He whispered as he moved closer to the leopard.