2023's Gotham War crossover storyline has brought in an abundance of classic Gotham City characters as Batman and Catwoman's moral feud boils into a war. That said, one of the most surprising appearances was the D-List Supervillain, Lady Clayface. First introduced as a Batman and Outsiders villain during the Bronze Age of Comics, Lady Clayface, aka Sondra Fuller, was never one of Gotham's most influential super-criminals since she was largely overshadowed by the original Clayface.
Source:https://www.cbr.com/lady-clayface-gotham-war-batman-dc-comics/