DnD:Tiamat
Tiamat is a supremely strong and powerful 5-headed draconic goddess in the Dungeons & Dragons role-playing game. The name is taken from Tiamat, a goddess in ancient Mesopotamian mythology. She is the queen and mother of evil dragons and a member of the default pantheon of Dungeons & Dragons gods. Her symbol is a five-headed dragon.[2] Tiamat was also named as one of the greatest villains in Dungeons & Dragons history in Dragon #359, the magazine's final print issue. David M. Ewalt of Forbes calls Tiamat "the most fearsome dragon in D&D's history".[3]