Doctor Marcia Cates was Jervis Tetch' supervisor at Wayne Enterprises.
History
Doctor Cates was a considerably harsher boss than Bruce Wayne, and by far less appreciative of Tetch. Eager for results, she pressed Tetch's brain enhancing methods for early publication, and blamed Tetch for needing too much time with them.
She became very angry with Tetch when he was called to Wayne's office. She again threatened to fire him. But this time, Tetch silenced her with a mind control card. He dressed her up as the Queen of Hearts in his Wonderland gang. Batman eventually freed her and took Tetch (now calling himself "The Mad Hatter") into custody.