Board Thread:General Discussion/@comment-26373999-20170408094855/@comment-27700324-20180114061237

Purple500 wrote: Xandermcc wrote: Well Titans is its own canon and Black Lightning is only temporarily not in the Arrowverse.

Damien or any of the Arrowverse characters that aren't in the crossovers aren't going to be on Supergirl. you never know. it could happen. black lighting will join the rest of the arrowverse like supergirl did, that's just a matter of time. also don't forget dopplegangers, who's to say that they don't have copies of themselves on earth 38. anything can happen. I know it's very unlikely but I'm just saying keep an open mind. It isn't about keeping an open mind. Black Lightning is confirmed to join, but Titans is confirmed to never be part of it ever. With Supergirl and Black Lightning, it has always been a "we'll see" policy. As for dobblegangers, they confirmed we won't see any as they feel it would be way too complicated to do so.