Continuity mistake: When Pinky barges into the protagonist's home, multiple times (for instance when he sits in front of her) her pigtails move behind her shoulders from the front and vice versa between cuts. (00:06:00)
Continuity mistake: After the alien abduction, Emmet plans to lead a rescue mission and opens the gate asking "Who's coming with me?" During the sequence, the shadows change completely. At first he is not casting much of a shadow, then it reaches the metal doors, then it stops midway towards it. (00:20:55)
Continuity mistake: At the beginning of the movie, the two knights are walking across the courtyard to get on their horses. When they mention the falcons' names, a young lady wearing an orange striped cape curtsies before them in passing. A couple seconds later during the close-up of girls ogling them from distance, the same lady passes in the foreground, coming from the opposite direction and in a totally different spot. (00:00:55)
Continuity mistake: Enzo's red tag hanging from his collar usually can be seen, but he did not appear to be wearing the red tag outside when Eve told Denny she was pregnant or when sitting in the bleachers with Eve at a race. (00:19:48 - 00:21:09)
Continuity mistake: When Santa tells Noelle he's anxious about inheriting his dad's role, the position of his arms is inconsistent between front and side shots.
Continuity mistake: Watch the back seat during the pullover scene. The 3 in the back aren't always there together. Joe's by himself in some scenes. The ladies are missing Joe between them.