Some actors in the superhero world, whether intentionally or not, have received a bad reputation for leaking major spoilers. Yes, we're looking at you, Mark Ruffalo. While his bombshell was very blunt, some actor leaks are more low-key and can pretty much go unnoticed for a long time.
One of these possible leaks came from Karen Gillan, who plays Nebula in the Guardians of the Galaxy films, as well as in Avengers: Infinity War.
Last year, Gillan sat for an interview with Fandango, during which she revealed her character Nebula has a best friend in Infinity War, although she didn't reveal any names.
We didn't exactly see much BFF behavior from Nebula toward anyone in Infinity War, so now there's speculation maybe Gillan was giving us a tease about what's in store for her character in Avengers 4.