With Avengers: Doomsday now filming and the film's release date only a year away, fans can't stop theorising about what's in store for the next Avengers reunion. One particular Reddit user has done the maths on which Avengers: Endgame characters are returning, and the results has some fans worried.

Whether the "mystery actor" is a name already known or one that hasn't yet surfaced, the photo revealed by MCU Film News sent fans into a wild run of speculation. The guesses about who the character/actor was began running rampant,

Avengers: Doomsday breaks the internet again with a behind-the-scenes tease, sending fans into detective mode!