Norse dragons, known as "ormr" in Old Norse, are mythical creatures found in Norse mythology. They are often depicted as large, serpent-like beings that guard treasures and are associated with chaos and destruction. These dragons can breathe fire and are typically portrayed as formidable adversaries to heroes and gods. One of the most famous Norse dragons is Fafnir, who transformed from a dwarf into a dragon due to greed. Norse dragons symbolize the dangers of greed and the struggle between good and evil, playing significant roles in various Norse sagas and legends.