Trivia: There's an homage to Beauty and the Beast as Timon starts singing: "It is with deepest pride and greatest pleasure that we welcome you tonight. And now we invite you to relax let us pull up a chair as the dining room proudly presents your dinner!" They then show Pumba as the dinner to the hyenas. Pumba was the distraction when Simba came back to the Pridelands. (01:45:00)
Trivia: After the Justice League go into the Stairportal, it cuts to giant words saying 5 Years Later. This is a joke and jab at the same kind of 5 years later cut in Avengers: Endgame.
Trivia: When Charlie throws out a Viking in the air, the Viking lets out a Wilhelm scream.
Trivia: In the 2019 Adams Family Wednesday is older than Pugsley, but in the original, Pugsley is the oldest.
Trivia: Peyton List voices Batgirl. Peyton List also voices Poison Ivy. This is not the same person getting credited twice. It's two different people. Normally the SAG doesn't allow two living members to have the same name, but they accidentally missed the younger Peyton List (Batgirl). The SAG should have made the younger List use a middle initial or stage name. Incidentally, the younger List got her start in an uncredited role in an episode of "As the World Turns" which also featured the older List.
Trivia: The fortress of solitude is a replica from Richard Donner's Superman film.