5. Captain Marvel Scares Ronan & The Kree Away From Earth
Guardians of the Galaxy villain Ronan the Accuser (Lee Pace) was confirmed to be in Captain Marvel back in early 2018. However, Ronan's role in Captain Marvel wasn't as prominent as many expected. For much of the film only appearing in a hologram to Yon-Rogg, Ronan eventually turns up at Earth to subjugate the planet, only for his weapons to be destroyed by Captain Marvel. Terrified of her immense power, he calls his ships to retreat. After this, Carol deals with Yon-Rogg, sending him back to Hala as well.
This non-combative ending works on multiple levels. Carol tells Yon-Rogg she doesn't have to prove anything to her former mentor, while Ronan's fear may explain why Earth hasn't been bothered by the Kree (or any other extraterrestrials other than Thanos) for such a long time: everybody's wary of Captain Marvel.
4. Goose Is A Flerken - And Scratches Out Fury's Eye
Captain Marvel promised to reveal how Fury lost his left eye, and did so in a rather surprising way: it's all it's Goose the Cat's fault. Carol Danvers' pet from the comic books, there called Chewie, made his way to the big screen as Goose, a reference to Top Gun. Of course, comic readers will have known this isn't your typical cat but the last of a ruthless alien species known as the Flerkens; tentacled beings whose bodies contain interdimensional portals and terrify Skrulls.
Goose plays a pivotal part in Captain Marvel's third act, ingesting the Space Stone for safekeeping, fighting off Starforce and ensuring the Skrulls' safety. However, after the final battle was finished, Goose suddenly scratched attacked Fury's left eye as he was holding it closely to his face. Fury at first shrugs it off, but it soon becomes clear it's more than a flesh wound.
3. Carol Danvers Leaves To Help The Skrulls... But Leaves Fury His Pager
When Nick Fury called Captain Marvel in Avengers: Infinity War's post-credits scene, everybody wondered why he hadn't called her before. Earth had been in peril plenty of times between 1995 and 2018, and yet Carol was never called to help the Avengers.
Captain Marvel explains that. At the end of the film, Carol has committed herself to helping the Skrulls find a brand new home. Before leaving, however, she returned Fury his pager (after confiscating it earlier) with a few Kree tech upgrades that will allow him to send her a signal a couple of galaxies away if he ever needs her.
2. Nick Fury Names The Avengers After Captain Marvel
Captain Marvel is Fury's first superhero encounter - and a very important one. His experience with her gave the then-desk jockey a reason to stay in S.H.I.E.L.D. at the time when he wasn't sure what his purpose was in the organization. More than that, she directly inspired the Avengers.
In response to what he witnessed during his mission with Carol, Fury came up with a proposal for a new project that would bring together a group of heroes that can defend the Earth in case another attack comes along, initially dubbing it "The Protector Initiative." Thankfully, after a brief conversation with Coulson regarding finding other superheroes out there, he found a better name: Carol's old F-16 was emblazoned with her call sign, Carol "Avenger" Danvers.
1. Captain Marvel's Post-Credits Scenes: Carol Danvers Returns To Earth Right After The Snap
Captain Marvel's mid-credits scene connects the events of her movie directly to Avengers: Endgame. It shows the Avengers - Captain America (Chris Evans), Black Widow (Scarlet Johansson), War Machine (Don Cheadle) and Bruce Banner (Mark Ruffalo) - in the aftermath of Thanos' snap examining the numbers of the dead. They've retrieved Fury's pager, which they're monitoring. It switches off, which surprises the survivors, and then Carol arrives behind them, asking "Where's Fury?" A simple tease for Carol joining Earth's Mightiest Heroes, this would seem to confirm she's going to be part of the team from the start of Avengers: Endgame.
The second stinger at the end of the credits shows Goose depositing the Tesseract on Fury's desk, directly leading towards its use in The Avengers.
With Carol Danvers' origin story in Captain Marvel out of the way, fans can now look forward to Avengers: Endgame with a more hopeful perspective knowing that MCU's strongest hero has finally arrived to help against Thanos.