Mike W. Barr and Jim Aparo created the Outsiders in 1983. The original six members were Batman, Black Lightning, Halo, Geo-Force, Katana, and Metamorpho. Black Lightning and Metamorpho were established characters who had both received their own series in the past. Halo, Geo-Force, and Katana were entirely new creations. Their first appearance was in the final issue of The Brave and the Bold. This was a special insert that told a story several months into their continuity.