It's part of the hair colour tradition that the series has. In this case, purple-haired mages. Other examples are the blue-haired Heroes (with some exceptions, of course) and pairs of knights with red and green hair.
It's part of the hair colour tradition that the series has. In this case, purple-haired mages. Other examples are the blue-haired Heroes (with some exceptions, of course) and pairs of knights with red and green hair.
That would be the Cain and Abel archetype, a pair of cavaliers who wear red and green, with the red unit generally being faster and more skillful, while the green unit has better strength and defense. You can look up "Fire Emblem archetypes" for more information.