Board Thread:General Discussion/@comment-4035909-20151001204944/@comment-24034641-20151002220457

just because the Black Lanterns haven't been shown on TV doesn't mean that they ever will, usually the only Corps shown are Green, Yellow and Red, the others are only mentioned if ever, and Blackest Night, being the Arc that Black Lanterns appear is a huge GL thing, so highly unlikely to appear in Arrow etc.