Danica is the Flash of the 2040s. She works at the Flash Museum in Central City and has a connection with the Speed Force that grants her the same powers as Flash. This connection allows her to communicate with previous speedsters like Jay Garrick, Wally West and Bart Allen. During her first meeting with the Justice League Unlimited, she saved them from the villainous Mindslide (Ronald Tagg), who had replicated their powers and mind controlled the heroes to fight each other.