Avatar the Last Airbender: The Last Ancient Race

In this fanfiction of Avatar the Last Airbender, the Atlanteans, the most powerful water benders of all time, were sealed deep within the ocean to maintain balance. However, their seal has weakened and Krea, the older brother of the king and general of their armies, is sent to prepare for their invasion. The Atlanteans are characterized by their pale complexion, blue tattoos, and pale blue eyes with the royals having white/silver eyes the mirror the color of the moon which make their water bending stronger. Kre'as is by no means a hero, he has conflicting ideologies, but is haunted by his duty to avenge his family and kingdom, and his morality is somewhat grey.