Spoilers! In the finale of the “Crisis on Earth-X” Arrowverse crossover event, DC’s Legends of Tomorrow handled an emotional roster change-up.
Arrow Made a Popular Fan Theory Come True in a Very Cool Way
https://www.youtube.com/watch?v=fHOyK1a4K4w
Why Earth-X Wasn’t The Primary Focus in the Supergirl Crossover:
https://www.youtube.com/watch?v=5-W-GhWXRVQ
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