Marvel fans have held a good amount of resentment toward Peter Quill (Christ Pratt), also known as Star-Lord, since he was a major reason why Thanos (Josh Brolin) defeated the heroes during Avengers: Infinity War. During the Battle of Titan, Iron Man (Robert Downey Jr.), Doctor Strange (Benedict Cumberbatch), Spider-Man (Tom Holland), Drax (Dave Bautista), Mantis (Pom Klementieff), Nebula (Karen Gillan) and Star-Lord hold down Thanos and try to extract the Infinity Gauntlet from him. However, Peter begins to question the whereabouts of his romantic partner, Gamora (Zoe Saldaña). Thanos reveals that he killed her, which causes Peter to lose control and punch Thanos repeatedly in the face, waking him up from Mantis' trance.
Source：https://www.cbr.com/guardians-of-the-galaxy-3-redeemed-star-lord-infinity-war-mistake/
