Continuity mistake: When Duke and Roadblock are playing video games in Roadblock's house, Roadblock's kids come up and start messing with Duke. They knock Duke's headphones off and comment about his big ears. But then Duke stands up with them on his back and his headphones are on his head again. The next shot, they vanish. (00:05:20)
Continuity mistake: Duke and Roadblock are having a contest to see who can shoot a cupcake at the end of a shooting range. In the shot from their perspective, there are some orangeish pink cross shaped targets mid range. The one on the far left is crooked and leaning sideways. But in shots from the cupcake's perspective, that same cross is standing straight up. (00:13:30)
Continuity mistake: Jaye drops some groceries in front of the Chief of Staff to lure him with her curves. As they are talking and she says, "Who says chivalry is dead, right?" she rakes her hair over her ear in one shot, but it doesn't stick and falls back in front of her face. In the next shot, it is suddenly raked over her ear and stuck there, at which point it falls out again when she moves. (00:52:00)
Continuity mistake: After Mouse snipes the cup from an enemy solder's hand to cause a diversion, Duke and Roadblock rush off and get into a fight with two other Asian solders. Roadblock pins one against a vehicle and pounds his face with his heat gloved hands. The solder's hat comes off, but in the next shot it is on again. (00:02:35)
Continuity mistake: While after the first nuke, Flint pushes an enemy solder over a railing to plummet to his death. He falls face down, but in the next shot, he is falling face up. (00:11:15)
Visible crew/equipment: In the extended action cut edition of the Blu Ray, during the added scene while Jinx and Snake Eyes are training, near the end of the scene Snake Eyes jumps near a tree and the camera faces upward. When it does you can see where the dojo set ends, and the top of the actual set with lighting equipment at the ceiling.
Continuity mistake: While Roadblock is first talking to his brother on the street, one shot shows a group of people walking up behind Roadblock. A couple of shots later, that group has suddenly vanished. (00:43:40)
Continuity mistake: In the scene when Roadblock drowns Flint he is holding Flint with his left hand and turns back to get a beer with his right hand, but in the next shot when Flint is shown struggling with his face in the water we can see that Roadblock is holding him with his right hand, from the thumb visible in shot.
Chosen answer: I believe three are named as Grunt, Clutch and Tunnel Rat in the script and credits.