They were probably joking, but obviously, we shouldn’t count the possibility entirely out. At some point, Mark Hamill “retired” from being The Joker’s voice, stating that he would only return for Alan Moore and Brian Bolland’s The Killing Joke, which was an R-rated film by Warner Bros.
For now, the Russos are already associated with a few comic projects including Quantum and Woody and Deadly Class.
— SideshowCollectibles (@collectsideshow) November 29, 2018
Directed by Joe and Anthony Russo, Avengers: Infinity War stars Robert Downey Jr., Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson, Benedict Cumberbatch, Don Cheadle, Tom Holland, Chadwick Boseman, Paul Bettany, Elizabeth Olsen, Anthony Mackie, Sebastian Stan, Tom Hiddleston, Idris Elba, Danai Gurira, Peter Dinklage, Benedict Wong, Pom Klementieff, Karen Gillan, Dave Bautista, Zoe Saldana, Vin Diesel, Bradley Cooper, Gwyneth Paltrow, Benicio del Toro, Josh Brolin, and Chris Pratt.
As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment – the fate of Earth and existence itself has never been more uncertain.
Avengers: Infinity War is now on Digital and Blu-ray, while the Untitled Avengers 4 hits theaters on May 3rd, 2019.