Catherine Jane Grant is a fictional character appearing in American comic books published by DC Comics.

Calista Kay Flockhart is an American actress. She is best known for portraying the title character on the Fox television series Ally McBeal (1997–2002), for which she received a Golden Globe Award in 1998 and was thrice nominated for the Primetime Emmy Award for Outstanding Lead Actress in a Comedy Series. From 2006 to 2011, she starred as Kitty Walker on the ABC drama series Brothers & Sisters, and between 2015 and 2021, Flockhart appeared as Cat Grant on the superhero drama Supergirl. In film, she is known for roles in The Birdcage (1996), A Midsummer Night's Dream (1999), and Things You Can Tell Just by Looking at Her (2000).