If “Eternals 2” happens, it would likely star many of the same cast members as the first film. Among those likely to return include Gemma Chan as Sersi, Kumail Nanjiani as Kingo, Brian Tyree Henry as Phastos, Lauren Ridloff as Makkari, Barry Keoghan as Druig, and Angelina Jolie as Thena. Based on a couple of teases from the ending of “Eternals” and its post-credits scenes, it stands to reason that the cast may also include Kit Harington as Dane Whitman, Harry Styles as Starfox, and Patton Oswalt as Pip the Troll.
There are several main “Eternals” actors whose potential returns are a bit on the iffier side due to the events of the first film. For instance, Lia McHugh’s Sprite finishes “Eternals” by voluntarily losing her superpowers in order to become human and grow old, so it’s unclear whether she would come back. Then, there’s Richard Madden’s Ikaris, who “Eternals” writer Kaz Firpo told Comic Book Resource is dead for good after flying into the sun at the end of the first movie. Of course, Don Lee’s supposed return as Gilgamesh in the sequel suggests that even a character’s demise is not necessarily a barrier to a comeback.
As for whether any stars from other branches of the MCU might make a cameo, that’s a roll of the dice at the moment. Arguably the most likely candidate on this front is Mahershala Ali’s Blade, who had a speaking-only role in “Eternals.” Perhaps fans might see him in the flesh for the second movie.