Today's Fact
Checked against independent sources — the issues are cited below.
The mystery figure who stalked the Infinity Stones in 2018 did not announce herself with a speech. Requiem walked up behind Thanos on Chitauri Prime, while the Mad Titan addressed his assembled horde, and removed his head with a single swing of a sword carrying the Power Stone in its hilt. Only when Rocket shot the attacker's mask away during a later battle did the heroes learn who had done it: Gamora, in Infinity Wars #1 (2018).
Her motive was not conquest. A fragment of Gamora's own soul had remained trapped inside the Soul Stone's Soul World ever since her years in the Infinity Watch, and living divided had been quietly hollowing her out. Reclaiming every Stone was, in her reasoning, the only road back to wholeness — so she swapped Star-Lord a counterfeit Power Stone in a bar, took the real one for her blade, and opened her campaign by killing the father who raised her.
The beheading was only the overture. Requiem went on to seize the Stones and fold the universe in half in Infinity Wars, welding pairs of heroes into merged beings in a pocket reality called Warp World. The deadliest woman in the galaxy had spent a lifetime escaping the role Thanos built for her; in 2018 she finally outdid his worst atrocities in the name of getting her own soul back.
Why It's Obscure
She spent decades trying to kill her father. When she finally managed it, she was the villain of the story.
Gallery
Comic art of Gamora and the figures named in today's fact.



Sources
Every claim above checks out against at least two of these independent sources.
Bullpen Bulletins
- Marvel Reveals Who Killed Thanos — ComicBook.comComicBook.com on Infinity Wars #1: Requiem beheads Thanos, Rocket unmasks Gamora, and her hunt for the Stones aims at freeing the fragment of her soul in Soul World.
- Marvel's Infinity Wars: Thanos Killed by Gamora — Screen RantScreen Rant's independent account of the same reveal, including the swapped Power Stone and the attack on Star-Lord that followed the unmasking.