One feeling warm on the inside?

• Sideshow performer
• A hot-headed performer?
• Troupe-mate of a sword swallower, perhaps
• Performer who might burn her mouth
• Hot-headed entertainer's achievement: concealing anger with the queen
• A belligerent flame-swallower?
• Entertainer on a diet of flames?
• Pugnacious person

Wiktionary Word definitions in Wiktionary
n. (alternative form of fire-eater English)