Continuity mistake: Diana falls from the horse holding her bow in the stunt shot from behind, but the bow is already on the floor in front of her in the next shot of the fall. (00:07:15)
Continuity mistake: When Barbara reveals herself at the White House and walks towards WW telling her "I can't let you do this, Diana", her left hand is closed or with the fingers straight out. Similarly, Pedro Pascal's tie pokes out at different levels in the various shots. (01:48:50)
Other mistake: The Emir wishes his ancestral land to be returned to him and the heathens to be kept out, but the wall that magically appears has 'heathens' on both sides of it, so his wish does not seem to be fulfilled. (01:19:00)
Continuity mistake: Max (Pedro Pascal) wishes to magically remove Simon from his path, and the Feds arrive. He asks one of them for information who shoos him off. Notice that two more agents are joining. Max then walks back to the entrance and those same agents are walking again, and when a few seconds later he's outside looking in, they are still just barely now joining the others. (00:55:40)
Continuity mistake: Max approaches Dr. Minerva on the stairs at the party. When he tells her not to accept "the limitations of nature", look behind her at the people coming down the stairs; there's a very characteristic man with a moustache, tan sunglasses and greasy hair. Seconds pass, and when Minerva chuckles at Max's remarks, there's that same guy again descending that same flight of stairs. (00:42:50)
Continuity mistake: Gal Gadot just bumped into Kristen Wiig. She walks off and Natasha Rothwell (Carol) asks her if she knows her insignificant co-worker. When Wiig says "Remember you hired me? Started last week?" she has both hands clasped together at the briefcase in one shot, while in the reverse she's pointing at herself and only then her hands join supporting the case. (00:21:35)
Continuity mistake: Minerva is on the floor picking up papers and trying to get her colleagues' attention. When they walk past her, she changes the hand she is using to pick the paper far away from her, and she has suddenly an extra paper standing conspicuously still vertically into the briefcase. (00:20:25)
Other mistake: Wonder Woman pushes the cute kid to safety onto a big FAO Schwarz plush. She then lassos the two baddies and springs to the opposite side of the mall hall to capture the last two, then turns to her left and exchanges knowing looks and complicit winks with that kid that is still sunken into the plush toy. They should be nowhere near close enough for her to do that. (00:16:00 - 00:16:40)
Continuity mistake: When Wonder woman dashes towards the last of the goons who were robbing the store at the mall, his buddy who is already on the floor has his hand on his belly in the first shot, behind his keister in the next. (00:16:30)
Other mistake: Wonder Woman is downtown in DC saving random people. She kicks a red sports car that was probably going to run over a hideously dressed jogger. She kicks it from the right side. The car spins towards the middle of the crossroads, and its hood faces the left turn of the crossroads. For a moment we see Wonder Woman go 'woosh' crossing the road in front of the car that is at a full stop in that position. It does not even begin to make sense, she is not coming from the same part of the road she was at. (00:11:45)
Continuity mistake: A couple walks in front of the TVs in the store window during Max's speech. The guy has a cigarette packet in hand, but when Max's voice finishes the sentence with "but are you reaping the rewards?" he has already a cigarette in his mouth. (00:11:25)
Continuity mistake: The contest begins and Young Diana is racing with other 8 Amazons. Their first goal is to get to a platform by either climbing ropes or using some mechanical contraption. When you look at the shot when Diana lands on the platform though, it is her, 4 on the ropes and 2 others in the air catapulting themselves on top like she did. That is a total of 7 contestants out of 9, and seems rather unlikely that two of the elite amazon athletes could pull a muscle jogging across the yard, which seems the only reason why they wouldn't be anywhere near the contested spot. Somehow it's again 9 Amazons in the faraway shot of the poles, but only 6 in the shot from the base of the poles. (00:03:45)
Continuity mistake: When Antiope is talking to her as she is getting ready for the contest, behind Young Diana there are a few warriors who walk their horses towards the large portal (that was closed initially and now is open). Their distance from Diana change incoherently between shots, and so do their numbers. Particularly noticeable as Diana gets ready to sprint before the gong; two girls watching and clapping become three talking amongst themselves. (00:03:00)
Continuity mistake: When the Amazonian contestants are lined up, there are 5 other Amazons to the side that are doing some warm up exercises. There are just three when Diana's mother is looking at the arena from her platform. In the same area those three disappear in the aerial shot of the stadium before the race starts, but are there by the 'ref' in the shot from the gong platform. Also, when the athletes sprint there are now a group of two and one of three. (00:02:30)
Revealing mistake: Maxwell is surrounded by the Secret Service, but these trained specialists look around idly and confused when he gets lasso'd and turns towards Diana telling her "Well, aren't you resourceful", as if they wouldn't see the cartoon rope. The guy on the left even appears to be fumbling with his communicator or belt weapon. (01:47:00)
Other mistake: The clocks inside the Oval office and the one you can see behind Carl as he is giving Diana the boring tour point at different times despite the two scenes happening simultaneously. (01:43:45)
Other mistake: Barbara is on the phone with Diana (which per se is already a feat, an international call from a public phone in 1984) and tells her what she discovered. It's broad daylight for both of them and meanwhile the TV announces that Max came into possession of half of the world's oil reserves, which were in Arabia. Let's assume he had someone from his escort party wish him there, but then again, if he could just teleport, he wouldn't take planes and helicopters as he keeps doing throughout the movie. And the news say that a "instability resulted in a nationwide run on gas." Already? It barely just happened now. Timing seems all over the place. (01:27:10)
Continuity mistake: When Diana is staring at Cheetah who looks at her from the top of the fortress, her hair is all the way to the left. When Cheetah pounces on her, she is waiting for her standing with her hair cascading both sides. (02:06:45)
Continuity mistake: In the mid-credits scene, the 'mysterious' woman holds the falling post and a mom is impressed. She has her hand on the canopy of the stroller, but in the reverse shot her hand is on the baby.
Continuity mistake: Just before the appearance of the fully transformed Cheetah, Wonder Woman counters a heavy machine gun by doing her move with the two bracelets clanging together. When she does that, the assault rifles that the marines left behind disappear vanishing in thin air (not just being knocked off the platform). (02:06:15)
Answer: When Barbara Minerva wished to be just like Diana, she was granted the same strength and powers as Wonder Woman. Barbara additionally became less humane and even more powerful and dangerous after morphing into "Cheetah." Diana needed the armor to outmatch and defeat Barbara. She was also expecting to fight a multitude of soldiers to get to Max. The armor was originally Asteria's, who needed the extra protection when she battled an army to save the other Amazons.
raywest ★