Theory: Old Man Steve Rogers has already fought in Doomsday and Secret Wars - Reddit
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Old Man Steve Rogers may have already lived through Doomsday and Secret Wars — his Endgame timeline loop could mean he fought those battles off-screen.
Bootstrap ParadoxPredestination ParadoxNarrative CausalityMultiverse Theory
Theory Briefing
- Steve Rogers staying in the past at Endgame's end means his full alternate timeline is largely unseen, leaving room for major events to have occurred.
- The theory argues Steve's aged return implies he lived through future MCU crises — Doomsday and Secret Wars — before audiences ever see them.
- If true, the MCU's upcoming tentpole events may already have a hidden witness whose choices shaped outcomes no one has mapped yet.
- The loop structure of Steve's timeline raises the question of whether his actions in the past actively caused or prevented the crises ahead.