Other mistake: While Sonic and Tails are locked up in old Spelunk's cage during the cave-in, right before the huge diamondius crashes on top of the cage, there's a close-up of Sonic holding the bars, and the color of his torso becomes the same as the background mid-shot.
Continuity mistake: Near the beginning of the episode, when Tails is flying, his muzzle briefly changes to the same colour.
Continuity mistake: When Sonic is trying to break out of the cage, the tips of Tails' tails are missing.
Continuity mistake: Sonics' construction outfit disappears after he tries to break out of the cage.
Other mistake: Right before the diamondius falls on top of the cage, there is a shot of Sonic and Tails holding on to the cage bars. In this shot, Sonic's arms are incorrectly coloured blue. In the next shot, they are tan again as they should be. (00:13:49)
Continuity mistake: In Subterranean Sonic, Sonic's arms turn blue in one scene when he's talking to Spelunk about politics.
