Deathstroke Alive?
If I'm not mistaken, this is in the same universe as every JL and Batman animation since "Justice League: War," including "Son of Batman" where Deathstroke died ... will his resurrection be explained ...
shareNot all of the recent DCUAUM films have been in the same shared continuity, only about two out of three per year; but, yes, this is one of them (Batman: Assault on Arkham; Justice League: Gods and Monsters; and Batman: The Killing Joke were all stand-alones). Honestly, it is pretty easy to imagine Slade escaping the undersea base in Son of Batman. You only assumed that he died. I'm convinced that the last escape pod we see launching had Deathstroke in it. If we do get an explanation, maybe it will include his acquiring the metahuman abilities he possesses in the comics.
"Hell hath no fury like that of the uninvolved." - T. Isabella