Nightwing or Renegade  as stated multiple times in the beginning of this issue is a villain now who teams up with Rose Wilson who tricks him into getting into a fight with Superman but ultimately proves in the end he's still a hero and gets on the wrong side of Deathstroke. Sometimes dropping in randomly into a story doesn't always work out but in this particular instance it works out perfectly where the characters are right now without having to overstate everything that's happened so far in the beginning of the issue. Thoroughly enjoyed and will definitely be on the lookout for other issues with this creative team.