The movie studio invested $250 million into Warner Bros., creating the WB Comics imprint that produced Superman comics from 1938 until 1956. Batman comic books followed in 1957 and 1966. Both superhero franchises gained momentum during the 1960s as superheroes entered popular culture. Marvel Comics launched its Avengers franchise in 1961. Disney Studios established its animated blockbuster Frozen in 2010. And Walt Disney Animation Studios developed Pixar films Toy Story 3, Finding Nemo and Cars 2 in 2006 and 2009. The studios produce movies using Hollywood storytelling styles such as sci