Fans who catch these references feel rewarded, while fans unfamiliar get to learn about what came before 2024's Batgirl, all while enriching and deepening the lore of the Batgirl legacy.

When Batman, Robin, and Batgirl catch up with them at the glue factory, Penguin sneaks outside and plasters the Batmobile with a sticky glue. The Penguin steals a priceless folio of famous ...