Superman doesn't have a particularly strong rogue's gallery of smaller villains. Due to his high power level, the character has often suffered from only being able to take on universe-level threats. Due to this fact, many wondered what villain a potential Man of Steel 2 could possibly include.
According to Justice League director Zack Snyder, Man of Steel 2 already had a planned villain: Braniac. As one of the DC universe’s most devastating foes, this could've resulted in another epic Superman movie.
Man of Steel 2 planned to have Braniac
In an interview with Bro Bible, Zack Snyder revealed that there were plans for Man of Steel 2 at Warner Bros. Back when Warner Bros seemed keen to continue the SnyderVerse, talks for the Superman sequel reached the planning stage. If plans for Braniac fell through, they would've reintroduced Phantom Zone Kryptonians.
“We talked about a Brainiac movie [for MoS2],” Snyder said. "I do think that the Kryptonians that are in the Phantom Zone are probably still around. And there was always a possibility for their return. Faora and whoever’s left. That was a thing that was always out there that we talked about as a possible sequel."
In the interview, Snyder revealed that they didn't want to use iconic villain Lex Luthor. While the character would've been available following the events of Justice League, the director wanted extraterrestrial threats.
"I just think it’s best to give Superman these extraterrestrial challenges,” Snyder continued. “I think you’ve got to be careful with - other than Lex Luthor, because, of course, you have to continue with Lex, because Lex is his real nemesis - but I think you really have to look outside of the Earth for challenges for him because of how powerful he is.”
Will we ever see this sequel?
Warner Bros will not be continuing the Henry Cavill Superman films. While Cavill's version of the character should appear in a potential Black Adam sequel, he likely won't get a Man of Steel 2. At the time of writing, Warner Bros doesn't wish to continue the SnyderVerse.