One big name coming to the Tulsa Pop Culture Expo is Summer Glau, best known as River Tam in the 2002 series Firefly and the 2005 movie Serenity.

Sean Gunn, known for his role as Kraglin in the Guardians of the Galaxy films will join another Guardians star, Karen Gillan at this year’s expo.

On Sunday afternoon, people gathered for a special showing of "The Outsiders" movie.