Crimson  

, クリムゾン

The character named Crimson is one of the main characters in the story, known for being proud and careful. Despite sharing the same species as dragons and being the ruler of dragon-winged family, Crimson harbors deep animosity towards these creatures. In a different era, almost entirely successful in eliminating all dragons alongside Ragna, there was an unspecified reason that prevented it from achieving its goal. Currently, Crimson and Ragna continue their battle against dragons through a temporal plane from the past.