Olivia Catherine Hack was born in Beverly Hills, California. At a young age, she first got her start as an actress with her role as Captain Picard's daughter in Star Trek: Generations (1994), and followed this up by starring as Cindy Brady in the two films based on the 1960s sitcom The Brady Bunch (1969), those being The Brady Bunch Movie (1995) and A Very Brady Sequel (1996). The same year that A Very Brady Sequel was released, Hack would also begin her voice acting career with her role as Rhonda Wellington Lloyd in Nickelodeon's Hey Arnold! (1996), and would subsequently reprise the role in the films Hey Arnold! The Movie (2002) and Hey Arnold: The Jungle Movie (2017). Her other roles include Ty Lee in Avatar: The Last Airbender (2005) and Mao in the English dub of Blood+ (2005), alongside various guest appearances in shows like Family Guy (1999), Freaks and Geeks (1999), and Gilmore Girls (2000), among others.