Yakone

Yakone was an infamous crime lord who had the unique ability to use bloodbending without needing a full moon which he used to created V.O.W.L. and to terrorize Inkopolis until he was defeated by Avatar Aang and had his bending permanently removed. Hellbent on getting revenge, Yakone trained his two sons Tarrlok and Noatak in bloodbending to be his tools for revenge, hoping that they would one day destroy the Avatar and conquer Inkopolis.