James Gunn is simultaneously juggling duties as one of two bosses for DC Studios while also shooting Superman, the latest reimagining of the Last Son of Krypton. During a recent break in filming, Gunn took to social media to share a gift given to him by the grandsons of Jerry Siegel, one of the two creators behind Superman. In a snapshot shared to his account, Gunn can be seen holding a signed reprint of the legendary Action Comics #1, the first appearance of Superman.