Connections involving voice actors.

Basically this is a post discussing, whether or not it counts for certain games, cartoons, T.V. shows, movies, and anime to have crossovers with the Injustice series due to having some of the same people working there. For example, James Marsters who played Brainiac in Smallville, Lex Luthor in Superman: Doomsday and DC Universe Online, Spike in Buffy The Vampire Slayer and Angel, and Lord Piccolo in Dragon Ball: Evolution was announced as the English dub voice for Zamasu in Dragon Ball: Xenoverse 2.