User blog comment:Nightslayer2/What I Like To See In The 3rd Season of Legends of Tomorrow/@comment-4786757-20170801035943/@comment-27700324-20170803142816

They did realize that mistake, but he was only allowed on by DC once the Supergirl crew wanted him on and he was no longer in the DCEU. I guarentee once Justice League starts up, Superman will not be allowed for Season 3.