Guest 666/Sixer

He wears a black cap with a red visor, featuring a white "R" outlined in red. His black paws have small, bright red claws with black outlines. His small horns are bright red, and he walks on all fours. His feet have a red "flame" effect. He also has a large, dark red "mane" and a bright red tail with the Roblox logo at the tip. Most of Guest 666's body is covered in soft, shaggy fur, and he's somewhat chubby. Guest 666's face is also mostly red (with a red mouth, small red fangs, and large, red eyes that appear to be bleeding slightly). His small claws and fangs can hurt you—not too badly, but it could be like a cat.
Size and shape: like that of a medium-sized cat, or larger, with a bean-like body.

Guest 666 doesn't warm up to people quickly; he'll probably bite your fingers if you try to touch him at first. He's very active and playful, though a bit rough, but he can learn to calm down with proper training. He doesn't talk much; he makes more grunts and meow-like sounds. Over time, he might become attached to you (he secretly enjoys being petted).
Often, to show affection, it might give you little nips on your fingers, without hurting you or intending to. It might also wrap its tail around your fingers.