- Katie is the daughter of 70s pop idol David Cassidy, who also starred in The Partridge Family.
- Katie originally auditioned for the role of Bela, but was called back to audition for the role of Ruby.
- Trained in martial arts and kickboxing for the part.
- 3.01 The Magnificent Seven
- 3.02 The Kids Are Alright
- 3.04 Sin City
- 3.09 Malleus Maleficarum
- 3.12 Jus in Bello
- 3.16 No Rest for the Wicked