Red Skull

Johann Shmidt
Red Skull

Human

Germany, Earth

Hermann Shmidt (Father)
Martha Shmidt (Mother)

Sinthea Shmidt (Daughter)

Experimental gas caused him to age at an unnatural rate, killing him

Joined the Nazi Party, personally picked & trained by Hitler
Wore a blood red mask of a skull to instill fear in his enemies
Accidentally put into suspended animation, revived in modern times
Used an imperfect version of the Super Soldier Serum

It enhanced him but left him horrifically disfigured, with an actual red, skull-like face

Hydra

Enhanced Physiology

Liam O'Brien (Avengers Assemble)
Ross Marquand (MCU)