In 2013, Sage was in Metropolis to visit her mother, who worked at the Wayne Financial Building, when she witnessed the Black Zero Event. She approached the building in time to see it collapse as a result of the duel between Kal-El and Dru-Zod.
Bruce Wayne, who was tending to Wallace Keefe, found Sage standing under loose rubble and managed to save her before asking where her mother was, to which she pointed to the building that just collapsed.
- Batman v Superman: Dawn of Justice (First appearance)
- Sage was named after the film's production name 'Sage & Milo'.