The Origin of the Fantastic Four: Part 2 - S1-E2
Continuity mistake: The button used to open the secret compartment on the platform Alicia's large Thing sculpture is on doesn't appear until Puppet Master presses it. (00:18:27)
The Origin of the Fantastic Four: Part 2 - S1-E2
Continuity mistake: When the warden is being interviewed on live TV, the cameraman is straight across from him. When the broadcast is shown on Puppet Master's TV, the camera is now facing the warden's left side profile. (00:03:20)
The Origin of the Fantastic Four: Part 2 - S1-E2
Continuity mistake: When Sue hits the heavyset inmate in the gut with the butt of the rifle, the rifle is fully visible. When the shot changes, the rifle is suddenly invisible like Sue is. (00:15:45)
The Mask of Doom: Part 1 - S1-E8
Continuity mistake: When Dr. Doom's robots are first seen in the pod, there are only three of them. When the shot changes, there are suddenly several more. (00:02:45)
The Origin of the Fantastic Four: Part 2 - S1-E2
Deliberate mistake: When the Thing is doused with the chemical that reverts him back to human form, he somehow also is suddenly wearing a T-shirt, jeans with a belt, and shoes, which is illogical since the Thing wears a speedo with no shirt and is barefoot. (00:05:35)
The Silver Surfer & the Coming of Galactus: Part 1 - S1-E5
Continuity mistake: When Galactus is connecting the two parts of his device together, the sky is partly cloudy. When the shot changes, it is suddenly full of dark clouds. (00:20:16)
The Origin of the Fantastic Four: Part 2 - S1-E2
Factual error: When Puppet Master takes a picture of the prison warden on TV with his Polaroid camera, the picture emerges instantly developed. Those types of pictures never develop instantly. (00:03:32)
Superskrull - S1-E7
Trivia: The Godzilla parody movie that the Skulls are watching at the beginning of the episode says it is presented by Roger Shnorman. This is a reference to cult-film director Roger Corman, who himself was an executive producer on a Fantastic Four film that was made around the same time this series aired, but was deliberately never released. (00:01:30)
The Origin of the Fantastic Four: Part 2 - S1-E2
Continuity mistake: As soon as Slash starts the jailbreak, the heavyset inmate suddenly has darker skin, which then reverts to its normal lighter shade when he is running towards the camera. (00:03:10)
Superskrull - S1-E7
Continuity mistake: When the noxious slime slug is approaching Super Skrull, it spews its slime at his feet. When the shot changes, the slime is gone. (00:05:00)
Superskrull - S1-E7
Continuity mistake: When Super Skrull knocks Thing away after the helicopter leaves, Thing lands facing Johnny and Sue. When the shot changes, he now has his back to them. (00:14:07)
Behold the Negative Zone - S1-E12
Factual error: When the heroes fly by the World Trade Center after Annihilus and Blastaar have begun battling each other, the 1 WTC building is missing its spire, and both buildings are incorrectly depicted as being conjoined by what appears to be a multi-level walkway. (00:18:13)
Behold the Negative Zone - S1-E12
Continuity mistake: When Reed interrupts the infomercial, all the merchandise that was on the table has disappeared. (00:07:06)
Behold the Negative Zone - S1-E12
Continuity mistake: When the cop in the helicopter is yelling at Annihilus through his megaphone that he is trespassing, the window he is leaning out of shrinks in size when the shot changes. (00:08:04)
Behold the Negative Zone - S1-E12
Continuity mistake: After Sue tells Miss Forbes that Thing is an adult, and she can't control him, the yellow couch that is behind her is now red. Johnny was also sitting on the couch, but by the time it has turned red, he is nowhere to be seen. (00:02:09)
Behold the Negative Zone - S1-E12
Other mistake: When the heroes are looking over the footage of their fight with Annihilus, Reed has been drawn twice. He is both at the control panel, and behind himself and to the right. The one that is not at the control panel was meant to be Johnny. (00:10:01)
Answer: Gleaned from the Internet: Much of the negative reaction was due to the poor, simplistic, and outdated quality of the animation where the characters moved stiffly and clumsily through scenes. There were also some obvious animation compositing gaffs. The animation colors were also criticized as being overly bright and cheery and out of character to the established story's darker tone. The broad humor of the first season was replaced by a more mature narrative between the characters.
raywest ★