James Gunn is definitely looking to break some rules when it comes to Superman: Legacy. Casting the likes of Anthony Carrigan and Rachel Brosnahan strongly suggests a more playful side to the Man of Steel -- a sensible move that would set it apart from the darker vibes of the departing DC Extended Universe. That most likely extends to the villain as well, and now another rumor may hold a clue as to exactly who that might be.
Source:https://www.cbr.com/superman-legacy-bialya-queen-bee/