PG-13 | Video | | Animation, Action, Adventure
Ocean Master's appearance at the end of the film is a nod to the Aquaman/Justice League crossover event "Throne of Atlantis", one of the comic book crossovers in the New 52. His appearance is a hint towards the later animated film adaption Justice League: Throne of Atlantis (2015).
Flash, my boy. Great to see you. Oh, yeah, and that's Batman.
The Flash: Batman's real?
Green Lantern: Yeah, he's over there.
The Flash: Wait, what? It is a real honor to meet you, sir, Batman. Sir, Batman, sir. Ahem.
Green Lantern: Don't bother. That guy's a total tool.
Batman: I followed your efforts in ...
When the President speaks at the end, the flags hanging on their side have the stars on the right. This never happens. When put on their side like that the flag is flipped as the stars are always on the left.