The Sentry's powers ostensibly derive from the Super Soldier-serum that "moves his molecules an instant ahead of the current timeline". This was designed to be a hundred thousand times stronger than the original used on Captain America, and was modified by Weapon X. However, in "The Age of the Sentry" mini-series, it is suggested that the Sentry is a sentient life-force, a refugee from another universe which attempted to break through to another one for its new home, and that this was merely accommodated by the serum.