About the same size as a normal cat, Calastor can purr and does occasionally do cat-like things. Usually however he sits motionless and stares unblinking for long periods of time. When he does occasionally blink, he frogs blinks one eye at a time. Always grinning or smiling. Razor sharp teeth. Can teleport. Moves silently. Can sprout black eldritch tentacles at will. Usually docile. Likes to freak people out