In a "Fire Chapter" promotional poster, Zane can be found attacking the Fire Fang while he is also found piloting the Shuricopter.
In the LEGO Ninjago toy-line, the character Ritchie appears as a pink rat and his name is spelled Richie. The pink rat also appears in the series as a background character. Ritchie appears in the toy-line as a character named Hausner, after Ninjago: Masters of Spinjitzu (2011) director Peter Hausner. This is most likely an error due to the animators mixing up the character models.
The Fuchsia Ninja's name is misspelled as "Fuschia Ninja" in the end credits.