Continuity mistake: When blood gushes out of the bullet wound during 05's introduction, in the first slo-mo the squirt goes diagonally across her eye. Then all that is left is a horizontal streak from the mouth. It is implied that between cuts she fit her glove by biting it, so the inconsistency can be explained (even if just a rushed wipe would hardly clean her completely). The real mistakes are: 1 - she has a dotted streak of blood before and after, entirely inconsistent with those close-ups, and 2 - when Ryan Reynolds and Dave Franco are talking about the 'squirting', you can see in the background Adria Arjona's face is totally clean. (00:07:55)
Continuity mistake: When Alita is playing the street version of motor ball she knocks over Tanji. In the next shot Tanji is following her in the pack as she scores, then the shot switches back to him on the ground.
Continuity mistake: When Russ and Frank are in the hotel pool the woman in the left is holding a cigarette. In the close-up it swaps to a lemonade. Then in the wide angle it swaps back to a cigarette.
Continuity mistake: When Dani is looking at Simon and Connie complaining to Ingemar after the female elder jumps off the cliff and they turn back to face towards it, Christian says "Oh my God" realising the male elder is about to jump off. At this moment, he has his left hand over his mouth and his right hand by his side. The shot then cuts and Christian now has his right hand over his mouth and his left hand on his chest. (01:10:55)
Continuity mistake: In the movie ending, the three main characters (and two main actors) are walking off together following Will Smith Sr. That 'knows a place' to eat. Notice on the left part of the frame, along the path they are traveling, a couple of students; he has a beige jacket, yellow-ish sneakers and jeans, she has a blue jacket, and they are talking with another girl with a lighter blue jacket. In the next shot Danny asks him "So you settled down on major yet?" and the two aforementioned students are behind them, standing at the beginning of the walkway. (01:45:35)
Continuity mistake: When Joker confesses that he was the one who killed the three guys in the subway at the Murray Franklin Show and also says "It's not a joke", he keeps his gaze turned towards Murray in one shot and towards the audience in the next.
Visible crew/equipment: As the camera moves forward in the opening shot, a clear reflection of a film light can be seen on the side of the fire engine.
Continuity mistake: Leah asks Moose if he brought the cutters, so he looks in his bag then hands Leah scissors. In the shots facing Leah she holds up the scissors by its handles, but in the shots facing Moose she holds up the scissors by its pointy end. (00:10:20)
Continuity mistake: In the graveyard, Frank is talking to Charlotte next to a tree. It cuts to a shot of Swilly for a brief moment, then back to Frank and Charlotte again, and suddenly he's standing much closer to her. (00:16:36)
Revealing mistake: After shooting Sofia's boss, they are making an escape through a hall with 4 firepits. Sofia orders the dog to attack, and it pounces on a baddie. The dog is chewing on the person's midsection, and you can see through his clothes the outline of the padded vest he is wearing to protect himself. (00:57:45)
Continuity mistake: When the girls bring a birthday cake into Judy's room at the first time, her bed sheet is patterned with what looks like flowers but when Judy is fast asleep the next time, the sheets are plain white. (00:52:30 - 01:15:30)