Hydra

HYDRA is a global terrorist organization dedicated to world domination, founded on the principles of the ancient cut-off-one-head ideology — destroy one cell and two more rise in its place. Originally a Nazi organization led by the Red Skull, HYDRA has evolved into an independent criminal empire that has infiltrated governments, corporations, and even S.H.I.E.L.D. itself. HYDRA is Captain America's most persistent and dangerous enemy.

Hydra Comics