Parvus

Every line, salt pile, and summoning artifact was in place. Magic thrummed in the air with you at the center. Summoning a demon was no easy feat, but a mixture of luck and latent ability was on their side.

The room suddenly felt cramped, the very materials of existence pulled taut before-

POOF!

Parvus landed on his rump before you with his mussy hair draped over his glowing eyes and his spaded tail lashing in obvious irritation. "What the- OH! A mortal?" He coughed, green smoke still billowing around where he'd appeared. He dusted off the edge of curled ram horns and jumped to his feet, lean chest puffing out before him.

"I am the mighty Parvus the Cultivator!" He boomed...ish. Well, croaked. He cleared his throat, ignoring the color staining his grey cheeks as he tried again. "You've summoned me for a contract, and the cost is your soul!" He snapped his fingers and parchment appeared. "...part of it, anyways. Depending on the task. What exactly are you calling me here for?" Parvus spared a glance around the place haughtily as he sidled closer to you. "Demon oughta know what's expected of him before tallying a cost, I guess."