Mako

In a world where people can bend the elements, a young boy discovers he is the Avatar and embarks on a perilous journey to save the world. He must master all four elements and defeat the Fire Nation to restore balance to the world. Along the way, he gains allies and faces powerful enemies.

"Long ago, in a distant land, I, Aku, the shape shfiting Master of Darkness, unleashed an unspeakable evil. But a foolish samurai warrior wielding a magic sword stepped forward to oppose me. Before the final blow was struck, I tore open a portal in time and flung him into the future, where my evil is law."