In the final moments of Guardians of the Galaxy Vol. 2, Kraglin could be seen during a post-credits scene where he was wearing Yondu's cyber mohawk and training with his whistle-controlled arrow.
The images show Kraglin wearing a version of Yondu's cyber mohawk in the final battle in Avengers: Endgame, where it looks like Kraglin was fighting alongside the rest of the heroes against Thanos.
While it's worth noting that in the comments section someone claims you can see Kraglin in an IMAX cut of the film, it was easy to lose him in the legion of heroes and villain on-screen in that final battle.
Kraglin also sports a leather-clad look that seems different from his usual Ravagers outfit, and it stands to reason that he might have gotten better at using Yondu's arrow too.
The character is played by Sean Gunn, brother of Guardians of the Galaxy's writer and director, James Gunn. Sean Gunn also provided on-set acting work for Rocket Raccoon in Guardians of the Galaxy, Guardians of the Galaxy Vol. 2, Avengers: Infinity War and Avengers: Endgame.
Written and directed by James Gunn, Guardians of the Galaxy Vol. 3 does not currently have a release date. The film is reportedly scheduled to begin production in February 2021.
Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr. as Iron Man, Chris Evans as Captain America, Mark Ruffalo as Bruce Banner, Chris Hemsworth as Thor, Scarlett Johansson as Black Widow, Jeremy Renner as Hawkeye, Brie Larson as Captain Marvel, Paul Rudd as Ant-Man, Don Cheadle as War Machine, Karen Gillan as Nebula, Danai Gurira as Okoye and Bradley Cooper as Rocket, with Gwyneth Paltrow Pepper Potts, Jon Favreau as Happy Hogan, Benedict Wong as Wong, Tessa Thompson as Valkyrie and Josh Brolin as Thanos. The film is in theaters now.