Continuity mistake: Laureline is not wearing a safety harness when talking to Valerian, but it appears and disappears several times as the shot cuts back and forth to Valerian. Laureline then puts on the safety harness she was already wearing.
Continuity mistake: During the opening scene with Ego and Quill's mother, they run into the woods behind the Dairy Queen, and mom is wearing boots with fur trim. When they get to where the Ego's plant is in the ground, she is suddenly wearing sandals.
Continuity mistake: During the arrival to the island there are 11 choppers. The first time Kong appears he takes down two. In the next sequence where they all see him for the first time 11 choppers still fly by Kong. (00:30:40)
Continuity mistake: Batman plans to put the Joker in the phantom zone, and Barbara says no. She is still right in front of the SUV, but in the next shot, she is suddenly standing more forwards.
Continuity mistake: Gargamel finds out of the smurf he captured is Smurfette. She grabs the bars of the cage, but the position of the door hinges changes, switching from her right to her left, back and forth. (00:13:35)
Continuity mistake: When the Gunslinger rescues Jake in the forest, he fires far more shots than we see his gun is capable of holding when he reloads it.
Continuity mistake: Kate's makeup has her looking well healed while she is still sleeping in the cave, only to return to a swollen eye as she is rescued from the frozen lake. (00:45:05 - 00:56:45)
Continuity mistake: When Noah and Adam are talking and Noah is playing with his fishing pole he is reeling it in. It cuts to a close up as he talks about his mother taking him to Canada and suddenly his left arm is pulled back a bit and he's holding the pole much closer to his body. (00:08:20)
Continuity mistake: When Jason slaps the bully in detention the distance between them changes from shot to shot.
Continuity mistake: Sara recovers the artifact and gets on the boat. She removes the deep-dive helmet and the oxygen tank. The villain is looking at her through his binoculars, she hasn't moved, but the equipment she took off and dropped on the deck has vanished. (00:03:00)
Continuity mistake: Throughout the scene at Stukey's, when Helen Mirren is chatting the Syrians' ears off her elbow sticks out of the window at variable length between shots. (00:05:45)
Continuity mistake: In the mid-credits scene in Justice League vs. Teen Titans, Terra's hair was shoulder length and she had no freckles, but in this movie, she now has shorter hair and freckles.
Continuity mistake: Right before and during the ending shootout, the sky changes a few times, as does the sun angle.
Continuity mistake: When the boy wakes up in the middle of the night after first hearing the dinosaur, his alarm clock reads 2:0x (its not clear but the digit segments on show imply it's either 2:05 or 2:06). The next time we see the clock it's 2:02, then two scenes later when the dinosaur decides to and then does jumps off the table the clock now reads 2:22.