As may be well known, there is a rift between Marvel Studios and Marvel Television. In general, while officially set in the same universe, the shows will reference the movies, but the movies won't reference the shows.
Is there any instance of a character, setting, or event that was introduced for one of the MCU shows (i.e., Agents of S.H.I.E.L.D., Agent Carter, Daredevil, Jessica Jones) that has then gone on to appear in an MCU movie?
Here are three candidates that spring to mind. All three of these are concepts that have roots in the comics, but first appeared in the MCU in Agents of SHIELD:
The Red Room. This is the Soviet training facility where Dottie Underwood (Agent Carter) and Black Widow were both trained as children.
It appears in Agent Carter s01e05, which aired in February 2015 – we see Dottie as a child in the Red Room, and the Howling Commandos find the abandoned facility.
Then in Age of Ultron, which was released in May, Black Widow has flashbacks (induced by Scarlet Witch) to her time in the Red Room.
The Inhumans. This was a major plotline in the second series of Agents of SHIELD, and Marvel have also announced a 2019 movie titled Inhumans, which will introduce them to the movie franchise.
The Kree. We see a Kree corpse in Agents of SHIELD s01e14 (March 2014), although at the time the exact species isn’t recognised. They get namechecked by Lady Sif in s01e15. (I don’t think we get confirmation that it’s a Kree corpse until series 2.)
Their movie debut is Guardians of the Galaxy, which was released in August 2014.
I can’t think of any MCU-original characters or settings that were carried over to the films, although I recall seeing interviews with Marvel execs who said they weren’t opposed to the idea.
In general, crumbs tend to fall in the other direction.
This marked the first instance of a character introduced in a Marvel Television production crossing over to the big screen in the Marvel Cinematic Universe.
Charlie Cox, who portrayed Matt Murdock / Daredevil in the Netflix series, reprised his role for the film. He has since continued to play the character in other MCU productions, including the Disney+ series She-Hulk: Attorney at Law (2022) and Echo (2024). Cox is also set to headline his own MCU series, Daredevil: Born Again, slated for release in 2025.
It's worth noting that among Marvel Television's various productions, only the Marvel Netflix series (Daredevil, The Punisher, etc.) have been officially confirmed as part of the MCU canon. This means that characters, settings, and events introduced in other shows like Agents of S.H.I.E.L.D., Agent Carter (the series, not the one-shot film), and Inhumans are not considered part of the official MCU continuity.
Does the Hydra leader List count?
He appeared for a few episodes in Agents of SH.I.E.L.D, and then got killed by Iron Man in Avengers: Age of Ultron.
