User blog comment:OfficialBrandonF/Could Darkseid be a villain for the 4-way crossover event?/@comment-26618197-20170415194201/@comment-26618197-20170417155614

Yeah the Anti-Monitor could be a thing but those are two major big bads. The Dominators made sense because

a) they were aliens

b) they were gonna have a major role on Supergirl so the staff introduced them in the crossover

I think it'd be best if Darkseid stayed on Supergirl or was saved more for if/when the worlds merge.