The most recent Marvel movie stars Olivia Colman and Samuel L. Jackson are among the cast, along with a Cardiff accent.
In developing the character of Gravik for Secret Invasion, Kingsley Ben-Adir told Buzzfeed that he was inspired by Butetown in Cardiff.
The actor claimed that he also became aware of Betty Campbell, the first black head teacher in Wales.
I just thought that might be a nice way in," Ben-Adir said, referring to the mixed-race community in Butetown.
I began talking to locals to develop the character because the area has a sizable Caribbean community and a military past. ".
London-born Ben-Adir claimed that during his research, Betty Campbell was the subject of significant learning.
"She was the nation's first black head teacher. I spent a lot of time listening to a wonderful podcast about her that was broadcast on the BBC. I only have a basic understanding of Cardiff and Butetown, though. ".
Ben-Adir has previously portrayed Barack Obama and Malcolm X in movies.
He will soon appear in Greta Gerwig's beloved Barbie movie and play Bob Marley himself in a brand-new biopic.
Wales has previously made an appearance in the Marvel Universe.
The 2018 superhero movie Black Panther featured the Welsh flag in a scene at the UN.
