10 Marvel heroes who failed to save the world

10. Star-Lord (Guardians of the Galaxy Vol. 2 / Infinity War)

In Vol. 2, Peter Quill’s heritage nearly led to the Expansion, where Ego would have consumed every planet. Later, in Infinity War, his inability to control his emotions on Titan disrupted the Avengers’ plan to remove the Gauntlet from Thanos. That moment is often seen as the turning point that sealed the universe’s fate.

09. Scarlet Witch (House of M)

Wanda Maximoff’s failure was an internal one. Following a nervous breakdown, she failed to control her reality-warping powers, leading to the "No More Mutants" decree. In an instant, she failed to save the mutant race, stripping millions of their powers and pushing her own people to the brink of extinction for over a decade.

8. Spider-Man (The Night Gwen Stacy Died)

On a more personal but equally devastating level, Peter Parker failed to save Gwen Stacy. Despite all his strength and speed, the rescue attempt itself proved fatal. This moment redefined Spider-Man, transforming him into a hero burdened by the knowledge that even his best efforts can have tragic consequences.

7. The Illuminati (New Avengers – Incursions)

The Illuminati were meant to prevent world-ending threats through intelligence and foresight. Instead, their secrecy became their greatest flaw. When faced with the Incursions, a multiversal collapse, they chose to operate in isolation rather than involve the wider superhero community. Their inability to act collectively or transparently led to the destruction of the multiverse, until Doctor Doom ultimately intervened.

6. The Punisher (The Punisher: The End)

Frank Castle isn’t known for saving the world, but here, he ensures its end. In a post-apocalyptic wasteland after a global war, he discovers a bunker housing what may be the last surviving humans. Believing them responsible for the catastrophe, he eliminates them. In doing so, he doesn’t just fail to save humanity; he becomes the one who finishes it.

5. Reed Richards (“Cap Lives”)

Reed Richards has saved the world countless times, but in the alternate reality of “Cap Lives,” even he couldn’t stop disaster. In a world where Captain America never returned during WWII, the Nazis rose to power unchecked. Reed, working with the OSS, did what he could, but ultimately failed to stop their dominance. Though he later helped a revived Steve Rogers defeat the Red Skull, his inability to hold the line earlier marked a devastating global failure.

4. Hank Pym (Creation of Ultron)

Pym’s greatest failure wasn’t losing a battle; it was a catastrophic lapse in judgment. By creating Ultron, an AI meant to protect humanity, he instead unleashed a being obsessed with wiping it out. In the Age of Ultron comic timeline, this led to a global apocalypse where most of Earth’s heroes were hunted down.

3. Havok (Uncanny Avengers Vol. 1)

In Uncanny Avengers (Vol. 1), Havok was tasked with leading a unity team of mutants and non-mutants. Instead of bringing them together, the internal tensions tore the group apart. This division allowed the Apocalypse Twins to exploit the team’s weaknesses, ultimately leading to the destruction of Earth. As leader, Havok’s inability to maintain unity directly contributed to humanity’s downfall. Even though time travel later corrected the outcome, the scale of his failure still stands.

2. Thor (The Mighty Thor #344 / Thor: The Dark World)

In both the comics and the MCU, Thor failed to prevent the Aether (the Reality Stone) from falling into the hands of Malekith the Accursed. His failure led to the death of his mother, Frigga, and nearly resulted in the Convergence, an event that would have plunged all Nine Realms into eternal darkness.

1. The Avengers (Avengers: Infinity War)

The most famous cinematic failure. Despite a desperate, multi-front war across Edinburgh, Titan, and Wakanda, the Avengers failed to stop Thanos from completing the Infinity Gauntlet. Their inability to sacrifice Vision earlier, combined with Star-Lord’s emotional outburst on Titan and Thor not going for the head, resulted in the Snap, erasing half of all life in the universe for five years.