A 5 year-old boy battling a form of leukemia was the star of a movie premiere Thursday night in Chicago.
Maddex played "Madzilla,” based on the character Godzilla, in the film.
Hundreds of fans packed the Music Box Theater in Lakeview to see the film.
Film critic Richard Roeper was also on-hand.
Maddex was diagnosed with his illness in 2013.
Make-A-Wish Illinois helped make the night happen.