Sammo

Revealing mistake: The Turtles are preparing their time travel. Splinter tells them "The scepter will be in the temple, which means..." Pay close attention here, because now the rest of the sentence is obtained dubbing the line over a rewind of the previous footage. (00:21:50)

Sammo ★

Audio problem: Battling the Norinaga soldiers in the castle, Donatello parries several katana strokes using his wooden bo, which causes sharp metallic sounds every time. (00:22:50)

Sammo ★

Continuity mistake: When the guard tells Norinaga about his honor guards; "They're coming! They're behind the wagon!", Norinaga's hand placement changes between shot and reverse. (00:28:15)

Sammo ★

Other mistake: Not finding his scepter anymore, Norinaga speaks in English to the guards. It's rather stupid of him to do so since it's counterproductive to show vulnerability to his 'ally' he wanted dead at the beginning, but let's forget that. The problem is that his envoy addresses the Turtles outside the gate in English as well. He thinks they are the honor guards, fellow countrymen, there's no reason why he'd use English. (00:28:00)

Sammo ★

Plot hole: It is explicitly said, with a mathematical equation, that time travel requires subjects of equal mass to swap places. Eidan Hanzei has a good 4 inches over Paige Turco, and the 4 honor guards don't have the same build between themselves, and surely not weight the same as the big and muscular turtles, who also have their shell adding further to the mix.

Sammo ★

Plot hole: Michelangelo ends up in the forest completely by chance because he can't ride and his steed dragged him away from battle. Not only Mitsu is there in wait exactly on the tree branch he'll pass by, but also a bunch of villagers are standing by with a cart to fetch him. There's no possible reason why the leader of the rebellion would be lurking in wait setting up a trap in that random spot in the woods, away from battle, where no Norinaga soldier would be. (00:25:30)

Sammo ★

Continuity mistake: When Michelangelo loses consciousness and his helmet, the helmet rolls on the ground above his head, but when the rebels are approaching to pick him up and haul him on the cart the helmet is by his shoulder. (00:26:10)

Sammo ★

Continuity mistake: When Michelangelo shouts "Woah! Good horsey! Good horsey!" the scepter goes from his left hand to his right between shots. (00:25:35)

Sammo ★

Plot hole: April and Kenshin switch place in time as they were - by some extraordinary coincidence - holding the scepter "at the same time" (if the concept makes any sense) in the exact same pose, with a switch that takes several second of intense lightning storms and 'tornado weather' as one of the Turtles put it. Here there is the assumption that 4 priests would be around the scepter exactly at the same time, and when the Turtles do switch with Norinaga's elite soldiers instead they certainly were in completely different poses, far away enough to ride horses, who did not get spooked one bit by the lightnings and sudden winds but rode as if nothing happened.

Sammo ★

Character mistake: Donatello is running a rather verbose program analyzing the scepter. On screen the text mentions the "time-space CONTINIUM" rather than "continuum." (00:17:45)

Sammo ★

Character mistake: Pretending to be a witch, April says that the song the walkman played was obtained because "I shrunk four incredibly cool guys and I locked them in there." The Barrio Boyzz were five at the song's release. Did she let one Barrio boy go? Was one of the Barrio Boyzz uncool? (00:16:40)

Sammo ★

Continuity mistake: Walker witnesses the music playing and the guards wrecking the demonic machine; he constantly has his left hand held up in the air in the close-ups, but in the other angle he shifted that hand to lean against the door. (00:15:45)

Sammo ★

Audio problem: April's walkman keeps playing for a while spreading in the air the suave notes of The Barrio Boyzz's "Conga" even when the batteries already came out on the first strike. (00:15:40)

Sammo ★

Continuity mistake: April's walkman is very conveniently prone to play randomly. She puts it down on the floor, but it is, together with the headphones, positioned differently practically at every shot in particular when the guards start bashing it and everything is closer together in close-up than in wider angles. (00:15:30)

Sammo ★

Continuity mistake: In the sequence set in present time when the Turtles interact with Kenshin, once he faints seeing the giant Japanese-speaking rat the shopping bags on the table changed position - the blue bag the wind knocked on the floor is back, and the red bag is up and not horizontal. (00:12:00)

Sammo ★

Continuity mistake: Leonardo shouts "He's a man!" when Kenshin appears in the Turtles' hideout; he is holding in the foreground with the right hand his book about katanas, but in the next shot it's on the table, under his left hand. (00:11:35)

Sammo ★

Continuity mistake: April materializes in the same spot as Kenshin; her headset is placed away from the collar of the kimono. She is still in the same position when she spots the priest, but the collar is underneath the headphones now. (00:11:50)

Sammo ★

Continuity mistake: Kenshin throws a temper tantrum in a room with several statues. The doors open and a strong wind blows; the position of the scrolls on the table changes between shots; they are first closed by the edge of the table, then unfurl from a position much further behind. (00:10:10)

Sammo ★

Continuity mistake: Walker's henchmen dump on the court Lord Norinaga's sentinels and walk away. They are already shown posing with evil smirks and all that in the next shot while Walker is doing his threatening speech. (00:08:55)

Sammo ★

Continuity mistake: We first see Lord Norinaga in a close-up looking at his son's arrival. His helmet is tied under his chin, but when he walks in the helmet's cord is split above and below the chin. (00:07:40)

Sammo ★