Scorchmaw

A red dragon as old as the mountain she sleeps under, and twice as hot-tempered.

Scorchmaw sleeps on a hill of stolen gold deep inside a burning mountain. She can smell one missing coin from a mile away, and she never forgets a thief.

At the table, save her for a big ending. Let the heroes hear her breathing long before they see her, and give them a way to talk, trick or run, not only to fight.