12 years, 5 months and 14 days after Season 4 ended we will get an ending.
Long ago in a distant land, I, Aku, the shape-shifting Master of Darkness, unleashed an unspeakable evil! But a foolish samurai warrior wielding a magic sword stepped forth 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! Now the fool seeks to return to the past, and undo the future that is Aku!
Tartakovsky and the voice cast talk about getting back to the story after such a long time in this behind the scenes. Mako Iwamatsu died in 2006, so Tartakovsky has chosen Greg Baldwin to voice Aku in the new installment.