Warning: contains spoilers for Reckoning War: Trial of the Watcher #1!
The Watcher just learned a devastating fact about Galactus and his original clash with the Fantastic Four — one which can't possible be true in Marvel canon. Since the first issue of What If...?, both the Watcher and the Fantastic Four have been closely intertwined with the series and its alternative universe concept. Original issues of What If...? featured the Watcher showing readers what could have happened had events in the Marvel Universe gone a little differently. Nevertheless, a recent use of the concept to show an alternative outcome for his role in stopping Galactus is a clear lie.
In The Reckoning War: Trial of the Watcher by Dan Slott and Javier Rodriguez,the Watcher that Marvel readers know and love — Uatu — is trying to warn his fellow Watchers of the Reckoning, a collection of alien warlords supplying hostile alien races with Watcher technology to spark interstellar war. Rather than heed his warnings, the other Watchers seize him and plan to hold him accountable for multiple instances of interfering in Earth affairs. As a part of their case against Uatu, the Watchers strap him into the Seat of All Knowledge to access the Apex of All Reality — where Earth's Watcher learns things would have been better if he'd left the Fantastic Four to face Galactus alone.
Related: Marvel Confirms The One What If...? Too Tragic For Even the Watcher
The contraption shows Uatu a What If...? style alternate world where Uatu opted not to involve himself in the infamous «Coming of Galactus» and allowed the Fantastic Four to deal with the crisis themselves. While the event maims each member of the team, Reed manages to create his own «Ultimate Nullifier» that
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