Steven Yeun as The Atom (Ryan Choi)
The Atom was beaten to the big screen by Marvel's Ant-Man, and the diminutive DC hero's cameo was cut from Justice League. Zack Snyder recently confirmed that his intended cut of the film had an Easter egg appearance by the Ryan Choi version of the Atom, played by Ryan Zheng (The Great Wall). Presuming that Ryan Choi would still be the DCEU's shrinking superhero if and when he finally debuts on the big screen, The Walking Dead's Steven Yeun would be an awesome Atom.
As Glenn Rhee, Yeun grew into a fan favorite as he gradually grew into a husband and leader among Rick Grimes' group of survivors - before his gruesome death at the hands of Negan (Jeffrey Dean Morgan, who's also in the DCEU as Thomas Wayne). Yeun has the smarts and likability to be the DCEU's Atom, and he'd be a great compliment to the nerdy Ray Palmer version of the Atom played by Brandon Routh on Legends of Tomorrow.
Nikolaj Coster-Waldau as John Constantine
The planned Justice League Dark movie remains mired in development hell so there's no movement on John Constantine returning to the big screen for the first time since Keanu Reeves played the mage in 2005's Constantine. Meanwhile, Matt Ryan's fan-favorite incarnation of the British warlock has found new life on Legends of Tomorrow. When the DCEU does finally get their act together, they should look no further than Nikolaj Coster-Waldau as Constantine.
As Jaime Lannister, the Game of Thrones alum proved his talent at playing a scheming immoral rogue whom fans still grew to love over 8 seasons. The Danish actor has also starred in dozens of films, including CGI spectacles like Oblivion opposite Tom Cruise and Gods of Egypt, which gives him plenty of experience to handle any scary supernatural threat the DCEU has to offer.
Ansel Elgort as Ronnie Raymond/Chiwetel Ejiofor as Martin Stein - Firestorm
Firestorm, a nuclear-powered superhero who can fly, manipulate matter, and has a flaming head, was made for the big screen but has yet to appear in the DCEU. Meanwhile, two versions of Firestorm have appeared in the Arrowverse; the first was Ronnie Raymond (Robbie Amell) and the second was Jefferson Jackson (Franz Drameh), both anchored to their mentor, physicist Dr. Martin Stein (Victor Garber).
If the Nuclear Man finally joins the DCEU, it's likely the original Ronnie Raymond version would be the one they opt for. In that case, a cool combination to comprise Firestorm would be Baby Driver's Ansel Elgort as Ronnie Raymond and 12 Years A Slave's Chiwetel Ejiofor as Dr. Martin Stein. Elgort would bring the youthful impetuousness in spades while Ejiofor brings his smarts, wisdom, and experience, making for a perfect Firestorm.
Gugu Mbatha-Raw as Vixen
With Birds of Prey, the DCEU is receiving an influx of female superheroes. A major DC heroine who has yet to appear in the movies is Vixen, the animal totem-powered African heroine who has been a member of the Justice League in the comics. Two versions of Vixen played by Megalyn Echikunwoke and Maisie Richardson-Sellers have appeared in the Arrowverse, but for the DCEU, Gugu Mbatha-Raw should wield the Tanyu Totem as Vixen.
Mbatha-Raw was one of the top names linked to the role of Black Canary in Birds of Prey before it went to Jurnee Smollett-Bell. But after her winning performances in Black Mirror and The Cloverfield Paradox, Mbatha-Raw not only deserves a DC movie role, she could help turn Vixen into the DCEU's answer to Black Panther.
O'Shea Jackson as Black Lightning
Though not part of the Arrowverse (yet), Black Lightning has become a critically-acclaimed hit on The CW with Cress Williams earning raves as Jefferson Pierce, the electricity-powered schoolteacher and family man. Cyborg (Ray Fisher) is presently the DCEU's only African-American superhero so the opportunity is there for Black Lightning to make a huge impact on the big screen as well. And a great choice to play the DCEU's Jefferson Pierce would be O'Shea Jackson, who played the younger version of his famous father Ice-Cube in Straight Outta Compton. Jackson, who also raps under the moniker OMG, also played a Batman-obsessed screenwriter in Ingrid Goes West, so he already boasts a DC pedigree and would make a killer Black Lightning.
- Aquaman (2018) release date: Dec 21, 2018
- Shazam! (2019) release date: Apr 05, 2019
- Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn) (2020) release date: Feb 07, 2020
- Wonder Woman 1984 (2020) release date: Jun 05, 2020