Starman (earth-22/retro)

There is some confusion about this character. According to Legion of Three Worlds, the Retro Legion Star Boy somehow wound up on Earth-22 an participated in the events of Kingdom Come. Subsequently he wound up in the 21st century under the alias Danny Blaine, joined the Justice Society, and then carried out a mission for Brainiac 5. He eventually returned to the Retro Legion in the 31st century.

Other interpretations say that this is a legitimate Earth-22 Starman, and that the character above was a distinct version.. It's all involved with Infinite Crisis, Final Crisis, the Multiverse, Hypertime, and a bunch of other confusing stuff.

In any case, pretty much everyone agrees that this Starman is not in any way the Star Boy who appears with the Legion in Kingdom Come.