The Lego Batman Movie (2017)

Plot hole: The film makes many references to the previous films and TV series as evidence of Batman's desire to be alone, but in the TV show and two of the films Robin has been established as his sidekick already.

Robin: My name's Richard Grayson, but all the kids at the orphanage call me Dick.
Batman: Well, children can be cruel.

Trivia: In the Justice League party there are several cameos from the old members of the league like Black Vulcan, the fantastic twins, Hawkman and Hawkgirl, Apache chief, El dorado, and Samurai.

oswal13

Question: When Batman and Robin are asked to get out of the prison, they run up the prison floor by floor. And we can see some locked villains. All their cell numbers are either 1091 or 1092. Is it an Easter Egg or a goof?

Lee Lap Fung