The Day of the Dragon: During the battle at the docks, the deflated blimp takes the place of the D.B. Express in one shot before both disappear altogether for the rest of the scene. There are many errors present during the fake Anacondrai's assault on the Elemental Masters at Chen's Palace: When the Anacondrai-turned Cultists break free, one of them is an Anacondrai General, despite them being banished to the Cursed Realm. Another Cultist has black chest printing. One of the Anacondrai-turned Cultists has Clouse's chest printing. The original Anacondrai generals had this chest printing as well. When the Ninja retreat into the palace, the Anacondrai imposters are replaced by the original Anacondrai.

The Greatest Fear of All: When a young boy in Jamanakai Village is playing with a paper dragon, Zugu, who is in his Anacondrai form, sneaks up from behind him. Ahead of the boy is a large group of people, who he runs to after seeing Zugu. Why they didn't immediately react to Zugu being there is unknown, but it is possible that he was invisible at first. At the same time, why everyone is crowded around watching someone play with a toy dragon is very odd as well.
And on top of that, there is an entire army of "Anacondrai" behind Zugu as well. Kruncha is mistakenly called Frakjaw by the warden.
Chamille wasn't seen with the other Elemental Masters when Shade commanded them to stop the trucks.

The Corridor of Elders: After Lloyd tells everyone that they fight as one and for each other shortly before the battle at the Corridor, the ninja and several of the Elemental Masters cheer and jump around. Yet the characters in the background, notably Skales and Shadow, are not moving at all and are standing completely still, which is likely an animation flop. As Garmadon violently ascends towards the portal to the Cursed Realm, there are four separate shots of him rising towards it. However, each shot features him rising from around a quarter of the way up to three quarters of the way up, with most of the shots technically being the same except from different angles. When Garmadon says, "Lloyd, wait!", he says it to Lloyd after he has already jumped off the Bounty. Technically, if the Ninja and their allies wanted to avoid a battle with the Anacondrai, they could have simply had Cole or someone else block off the corridor by collapsing a section of it inwards. They would then potentially be able to box in the Anacondrai and defeat them from there. When the statue is falling on the Ninja and their allies, two Lous can be seen. In the recap of "The Greatest Fear of All" Zane says "twenty trucks could hold two hundred Anacondrai" in his human voice instead of his robotic voice.