Zaheer

Zaheer is the main antagonist of Avatar - The Legend of Korra Book 3: Change.

S.P.E.T.R.E.
With the Red Lotus on the run from the White Lotus, Zaheer is soon busted out of jail by a S.P.E.C.T.R.E. task force who recruits the mad airbender. Zaheer then declares that airbenders who don't join Blofeld must be purged.