Continuity mistake: When Joaquin enter the bull fighting ring before Manolo's bull fight, Joaquin removes his cape and drops it on the ground. When Joaquin's horse gallops by and Joaquin grabs onto his steed, the cape is missing. (01:35:00)
Continuity mistake: When the WABAC machine is going through the time vortex, trying to escape from the black hole, some tiles get sucked off the WABAC, but in the next shot they are back on.
Continuity mistake: During the chase scene in the Wild West, Bad Cop shoots a tracking device onto the back of Emmet's left leg. The tracking device disappears and re-appears at random until it is revealed during the attack by Bad Cop on Cloud Cuckoo Land.
Continuity mistake: When Sonata's siren form is stunned by Fluttershy's butterflies, her teeth are blue when they should be white.
Continuity mistake: During Stoick's funeral Hiccup first shoots an arrow towards the ship and then the other characters draw their bows. Gobber is not shown as he is further away. In the next shot where they shoot their arrows, Valka and Eret are suddenly further apart from each other and Gobber has moved closer in between them. Eight arrows are shot simultaneously, but only seven arrows rain down.
Continuity mistake: When Classified is telling the penguins about the North Wind as Skipper eats the Cheesy Dibbles, the amount of cheese powder on Skipper's feathers differs between shots.
Continuity mistake: When Surley is in the tree getting ready to lower himself to the nut cart, after dropping Buddy in the bucket, he puts a spool of thread onto a small branch and there is nothing else on the branch. Next shot, there is a clothespin on the branch behind the spool that he moves to the front to hold the spool in place.
Continuity mistake: When Honey meets Hiro, she has earbuds in her ears playing music. She starts talking to Hiro, pulls them out of her ears, and they dangle out of her shirt. The dangling earbuds disappear in the close up shot of her and Hiro.
Continuity mistake: Cyborg attempts to hack into one of the freeze ray satellites and is stopped by Captain Cold, who freezes Cyborg. Once frozen, you can see that Cyborg is completely encased in ice from head to toe, fingers and all. But moments later as Batman is flying by in the Batwing, he looks over and sees Cyborg frozen, and in that shot, Cyborg's left hand is not frozen and protruding from the ice. Then when Batman goes to free him, Cyborg is fully frozen again.
Continuity mistake: Briareos' VTOL fires all of its forward missiles twice. (The forward missile bays have distinct markings in the form of a set of three white rectangles at each side). (01:15:26 - 01:16:40)
Continuity mistake: Tinker bell and her friends throw their swords on the barrel to defeat the pirates with their powers instead. The swords disappear in the next shot of the barrel.
Continuity mistake: In the flashback, Gator has three trucks at first, but when he conquers his fear and crosses the bridge, he has a fourth one.
Continuity mistake: During the "Perfect Puppy" silly song, Bob places a newspaper he had been reading on the couch beside him when Larry starts singing. When Bob shows Larry the picture of the dalmatian, the newspaper has vanished. When the shot cuts back to Bob, the newspaper has returned. (00:16:55)
Continuity mistake: When we first see the male volcano, he is an entire island with trees and forests. After many years have passed and sinks into the ocean, it can be seen the trees and forests have now gone. However, after he spews out of the ocean and is together with the female volcano, the male volcano suddenly has trees and forests around him again.