Doctor Irene Schulz was a human physicist, and a leading expert on temporal physics.
She and Dr Leon Perkins travelled in time using a vortex manipulator.
Together they were tasked with procuring a painting from 1899. By mistake they travelled to 1999 and took a painting from a small museum, bringing it back to their client in exchange for a shot for Dr Schulz. (COMIC: A New Beginning)
She and Perkins later joined the Time Agency. (COMIC: Hidden Human History)