A modern monkey king earth bending machine! This is a combination of two inspirations and great tales: Journey to the West and the Avatar series. The monkey king sets off to a journey to the west, to the fire nation and wreaks havoc to all fire benders who seek to enforce imbalance and their rule on everything. This may have taken place a few years before Aang's exit from the ice. You can add to the lore on the comments if you want.