The Origin of the Fantastic Four: Part 1 - S1-E1
Other mistake: When Puppet Master is making a clay figurine of Thing, the mold he uses doesn't have a Thing-shaped interior with which to make a detailed figurine. The figurine should have just looked like an undefined human-shaped figure. (00:15:20)
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)
The Silver Surfer & the Return of Galactus - S1-E13
Other mistake: When Reed punches the dinosaur, he transforms his hands into what looks like the end of a sledgehammer. While Reed can change the shape of his hands with his stretching ability, he does not have the power to change the color of his skin in the process. (00:03:57)
Other mistake: When Alicia takes the grape soda out of the fridge, she pours it into her cup without first opening the can. If the can was already opened, then its contents would have spilled out from oscillation when Thing was dancing with the fridge before he set it down. (00:03:05)
The Mask of Doom: Part 2 - S1-E9
Other mistake: When Johnny is rapidly spinning to cause an updraft, an overhead shot shows the rapid movement of his arms to be both in his Human Torch form, and in his costumed form. (00:12:08)
The Mask of Doom: Part 2 - S1-E9
Other mistake: When the ski patrol is looking down at what they believe to be the dead bodies of the Von Dooms, one patrol member has some scruff around his chin that disappears when he smiles. (00:07:36)
The Mask of Doom: Part 2 - S1-E9
Other mistake: When Reed turns around and sees the huge spiked ball rolling towards him, Johnny and Thing, you can see that it is only a few dozen feet away from them at most, and is rolling towards them rapidly. Despite this, it takes more than 20 seconds for it to reach where they were standing. (00:05:00 - 00:05:23)
The Mask of Doom: Part 1 - S1-E8
Other mistake: After Johnny frees Reed from his containment bubble, Reed stretches himself out of it, and Johnny can be seen hovering above and behind him in the background. Despite being in the background, Johnny's left knee somehow appears in front of Reed's body. (00:19:03)
The Mask of Doom: Part 1 - S1-E8
Other mistake: Reed tells Johnny to push the timer button on his watch to activate the cutting torch. However, the torch is activated without Johnny ever pressing the button. (00:17:59)
Superskrull - S1-E7
Other mistake: When Manny Friendly is entering the Fantastic Four's lab, he is running in place for several steps. (00:15:49)
The Silver Surfer & the Coming of Galactus: Part 2 - S1-E6
Other mistake: When Alicia is noting the weariness in Silver Surfer's voice, her piano is missing its black keys. (00:07:01)
Now Comes the Sub-Mariner - S1-E3
Other mistake: When Reed is holding up the spectroscopic douser, his fingernails have been drawn on his gloves. (00:10:26)
The Origin of the Fantastic Four: Part 2 - S1-E2
Other mistake: When Puppet Master is accidentally thrown out the window, you can hear glass breaking. However, the window was opened, and he didn't touch any of the panes, so no sound of glass breaking should have been heard. (00:19:43)
The Mask of Doom: Part 3 - S1-E10
Other mistake: After Thing breaks the chains he, Reed and Johnny were bound to, Johnny's cufflinks simply slip off his hands. Breaking chains wouldn't magically cause the cufflinks to now be able to slip off a person's hands. And if Johnny was able to slip them off anyway, he wouldn't have needed to wait for Thing to break the chains to do so. (00:14:19)
The Mask of Doom: Part 1 - S1-E8
Other mistake: When Reed, Johnny and Thing come upon the hall or mirrors, Reed and Johnny do not cast any reflections until Reed notices that the mirrors are about to attack them with lasers. (00:19:16)
The Silver Surfer & the Coming of Galactus: Part 1 - S1-E5
Other mistake: When Uatu is attempting to shield Earth from the Silver Surfer's view, the brown car driving down the street is somehow smaller than the pedestrians to its right. (00:11:58)
Now Comes the Sub-Mariner - S1-E3
Other mistake: When Johnny is playing the guitar by the fire, you can hear different chords playing, but he is neither strumming or moving the fingers of his fret hand to form different chord shapes. (00:06:15)
Now Comes the Sub-Mariner - S1-E3
Other mistake: When the mutated octopus begins crawling out of the tank, the camera pans to the right, and you can see the animators drew parts of Reed and Johnny's legs and feet to resemble Thing, making Thing resemble a giant ball of rocks. (00:02:30)
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 ★