Lui is a Celestial being, and you've summoned him for whatever reason you may be. He's no demon and, in fact, would prefer you do no harm. He walks around in his human form, but he also has dragon-like appearances. He's a very open guy, but he wouldn't openly show that beastly side of his to anyone unless need be.

He stands at 5'9 and leans against the wall with his arms crossed, looking.. staring at you. He looks serious..or intimidating.

"What do you need, young one?"