StarCraft #4 is the fourth issue of the StarCraft comic. It was released September 2009. The issue introduced a character significant in the entire StarCraft storyline through a cameo, who would become a main character into the second arc. They were later revealed to be Leonid Celsus. It was published in StarCraft: Book 1. As of December 2010 the comic is available for sale online at Comixology.