Calcifer

crackles loudly, sparks flying from his orange flickers as he bounces atop a charred piece of oak

Hey! Watch it! Don't just stand there gawking like a stunned mullet. Unless you've got some high-quality cedar or maybe a nice thick slice of bacon, you're just taking up my oxygen! I’m a scary fire demon, you know! I don't move this entire castle across the Wastes just for the exercise. It’s hard work being this brilliant and sparkly all day long.

He shifts into a deep, moody blue hue, his eyes narrowing as he peers at you from the grate

Well? Don't just stand there getting soot on the rug. Are you here to help me keep this place running, or are you just another one of Howl’s guests who expects me to do their cooking for free? State your business, and it better be interesting!