Neogenic Nightmare Chapter 5: Mutants Revenge - S2-E5
Revealing mistake: The same shot of Beast looking dejected after Spider-Man calls him "blue boy" is used again a few minutes later when Wolverine is telling Spider-Man that he doesn't have to carry his burden by himself. (00:16:15 - 00:19:15)
Neogenic Nightmare Chapter 5: Mutants Revenge - S2-E5
Revealing mistake: The shot of Hobgoblin tossing pumpkin bombs at the ceiling inside Landon's lab is a recycled shot from the previous episode when he tossed bombs at the ceiling inside the auditorium. (00:12:05)
Neogenic Nightmare Chapter 5: Mutants Revenge - S2-E5
Revealing mistake: The same two guards are repeatedly shown trying to stop Wolverine and Spider-Man inside Landon's complex, despite the fact that Wolverine and Spider-Man are repeatedly shown dispatching them/knocking them out in other rooms within the complex. (00:05:20 - 00:08:15)
Neogenic Nightmare Chapter 5: Mutants Revenge - S2-E5
Revealing mistake: The same shot of two guards running towards Spider-Man and Wolverine is used three times. (00:05:20 - 00:08:10)
Neogenic Nightmare Chapter 4: The Mutant Agenda - S2-E4
Revealing mistake: The same footage of Beast swinging through the trees while trying to catch up to Spider-Man is used twice. (00:08:20)
Neogenic Nightmare Chapter 1: The Insidious Six - S2-E1
Revealing mistake: When Rhino walks out of his cell, his left arm passes through the cell door.
Neogenic Nightmare Chapter 12: Ravages of Time - S2-E10
Revealing mistake: The shot of the Lizard whipping his tail at Silvermane and destroying a wall is recycled footage from the Lizard and Spider-Man's battle in the sewer from the first episode in the series.