An akuma is typically depicted as an entity with a fiery head and eyes, and carrying a sword. The akuma is typically said to be able to fly, and to be a harbinger of ominous and terrible fortune and can bring misfortune to those who happen to see it.
In the fighting game series Street Fighter, Akuma is the american name of a character named Gouki.
In the television series Miraculous, an akuma is a creature resembling a butterfly that can grant powers to any civilian through negative emotions. No matter their initial intentions, the one granted these powers inevitably goes on a destructive rampage in pursuing whoever caused that emotion.