>>149502009
Out of story wise, Roy thought twins with opposite powers was cute.

In story, Jade just got Alan's powers and Obsidian's just kinda went unanswered beyond implying it was the dark part of the starheart. In early 00s Robinson/Johns retconned/answered it by stating Obsidian got Ian Karkull's because in All Star Squadron Annual #3 Alan and Dr Fate made him explode XX years ago and absorbed everything. Ian exploding is also one reason why the JSA was younger.