It is possible that Lobo will be involved in the season pass. Ed Boone has tweeted pics of Lobo with in the last week. Also about Nether Realm "not following cannon" it seems more like DC has given Nether Realm the freedom to create cannon, in that they have created a comic series that goes with the the story mode of the game.

you can't be the king of china town... I just killed him in the new hitman game.... lol