Mewtwo VS Shadow the Hedgehog - S3-E6
Revealing mistake: During Shadow's Super Shadow transformation, half of the background becomes a green screen.
Mario VS Sonic (Nintendo VS Sega) - S5-E13
Revealing mistake: Except when Sonic picks up a handful and throws it in Mario's face at the start of the fight, neither character has any effect on the sandy beach around them. Sonic even runs circles around Mario at super speeds with no effect on the soft sand. (00:15:45)
Revealing mistake: As Ruby is about to blast Maka in the face with her gun, one of the little clip things on her thighs is clipping through her clothes and leg. (00:16:48)
Blade VS Buffy Summers - S12-E10
Revealing mistake: Just before Buffy fires a bolt at Blade, a close-up of her crossbow shows faint lettering above her finger and the trigger reading "PIST," likely part of "PISTOL" or "PISTOL GRIP." The glossy finish and clean casting reveal it's not a real crossbow but a modified airsoft or prop pistol frame, exposing it as a movie prop rather than a functional weapon. (00:19:54)
