- Acting for Two: Like Will Ferrell in The LEGO Movie, Jackie Chan appears in both animated and live-action, as the voice of Master Wu, and the actor of Mr. Liu.
- Actor-Inspired Element: The duel between Master Wu and Lord Garmadon incorporates some of Jackie Chan's Signature Style, as he worked as both a cast member and a fight choreographer on the movie.
- Box Office Bomb: Budget, $70 million. Gross, $59 million (domestic), $123 million (worldwide). Notably the first box-office bomb from WB's current animation studio. As a likely consequence of this, no one from Ninjago appears in The LEGO Movie 2, which does supplement the return of the original's main characters with cameos of supporting characters from The LEGO Batman Movie and Unikitty!.
- Cross-Dressing Voices: Lloyd is voiced by a woman in the Japanese version, Eriko Matsui, who also voiced him in his TV show incarnation.
- Dawson Casting: Actors in their 30s-early 50s voice high-schoolers.
- Enforced Method Acting: Dave Franco started crying while recording some of Lloyd's dialogue to Garmadon, and these emotionally raw takes made it into the final film.
- The Other Darrin:
- Only taking The LEGO Movie spin-offs into account, it doesn't sound like Dave Franco voiced Lloyd during the first time the character spoke in one, the 2014 short Enter the Ninjago.note
- In the Japanese dub, Master Wu, despite being voiced by Jackie Chan in the original version, is not dubbed by Hiroya Ishimaru, Jackie Chan's official voice actor in Japan, but by a very different voice actor this time (Kazuya Ichijo). This is the first time in basically decades that someone else other than Ishimaru has done the Japanese dub of a movie starring Chan.note
- The Latin American Spanish dub is similar, as Arturo Mercado is Jackie Chan's semi-official voice actor in Mexico, but Carlos Segundo (best known as Piccolo) dubbed Chan's role in this movie. Also, Alejandro Villeli (the voice of Master Wu in the series) only did his voice in two teasers - for unknown reasons he wasn't called again unlike most of his castmates.
- In the Italian dub, Davide Perino voices Lloyd instead of Andrea Di Maggio. He is the only character whose voice actor is not the one from the TV series.
- The video game replaces everybody, likely due to budget issues. And, as a result, the cutscenes that use footage from the movie has the dialogue redubbed by the actors for the characters in the footage as well for consistency.
- Release Date Change: Warner originally announced a September 2016 premiere, before pushing it back to September 21, 2017 in favor of The LEGO Batman Movie.
- Role Reprise:
- In the Latin American dub, Humberto Solórzano (Lord Garmadon), Carlos Hernández (Kai), Jaime Alberto Carrillo (Jay), Enzo Fortuny (Cole) and Roberto Mendiola (Zane) reprised their roles from the TV series.
- In the Italian dub, everyone but Lloyd haves the same voice actor as in the TV series.
- So My Kids Can Watch: Michael Peña accepted the role of Kai due to his son's love of the Ninjago TV show.
- Spoiled by the Merchandise: Misako's combat capability is spoiled in the second wave of the toyline based off the film, freely showing her off helping the heroes. Pictures of her Lady Iron Dragon minifigure appeared before the movie premiered.
- Throw It In!: The cast improvised several jokes, including Garmadon's phonetic pronunciation of Lloyd's name.
- Voices in One Room: The main cast recorded their dialogue together (which is actually pretty rare for animated theatrical films with celebrity voice actors), in order to get a feel of the characters' dynamics and interactions.
- What Could Have Been: One early draft had the ninjas traveling back in time to try and prevent Garmadon from being bitten by the Great Devourer in the first place.
- You Look Familiar: Dave Franco voiced one of the construction workers in the first LEGO Movie, Wally.
Trivia / The LEGO Ninjago Movie