The Brave And The Bold #173 1981

The Brave And The Bold #173, published by DC in April 1981, features Batman teaming with a Guardian of the Universe. The Guardian seeks Batman's help to uncover an impostor among their ranks and restore Hal Jordan's Green Lantern memories, hinting at Sinestro's involvement. This issue is notable for its team-up between Batman, the Guardians, and Hal Jordan, setting up a continuing storyline. It also includes a Nemesis backup story.