May 29 marked the comic debut of the formidable DC supervillain Brainiac, and, as always, DC Studios co-head and Superman director James Gunn took the opportunity to geek out a bit on X and share some comic history. In his tweet highlighting Brainiacs first appearance in the 1958 Action Comics #242 issue, Gunn describes the [] The post James Gunn Reveals The Real Reason Superman and Brainiac Have Beef appeared first on Den of Geek.