User blog comment:OfficialBrandonF/Could Darkseid be a villain for the 4-way crossover event?/@comment-26618197-20170415194201/@comment-27700324-20170417212543

Well the Anti-Monitor is a Green Lantern foe, however everyone fought him during the Crisis. Also a lot of the characters from the Arrowverse were in this story. Killer Frost, (turned good because of Psycho Pirate's powers) Firestorm, Flash, Supergirl, Citizen Steel, Wildcat, Jay Garrick, Freedom Fighters. (they are going to be in a CW Seed show)