At least everyone of the characters we care about will be back for part 2 except for Graves/Colin Farrell. I was kinda hoping Grindelwald didn't kill him and had him locked up somewhere much like what happened to Mad Eye Moody when Barty Crouch Jr. used the Polyjuice Potion to pretend that he was Mad Eye. But I guess Grindelwald is the killing type so he didn't spare Graves' life anymore.
