Continuity mistake: The hot dog vendor opens the sausage compartment. The shot changes, and it's closed, and he opens it again.
Continuity mistake: The position of Hercules' hand on the sculpture of Pan changes between shots.
Visible crew/equipment: When Helen and Hercules ride in the carriage, the shadow of the camera is visible.
Continuity mistake: When the hot dog vendor and the other man chase Hercules and Pretzie, the street is packed. In the aerial angle, it's empty.
Continuity mistake: When Zeus says, "Hercules is my son," the shot changes, and the light on his face suddenly swaps from shadowy to bright. (00:41:45)
Continuity mistake: When the mobster tries to talk Pretzie into signing the contract, he puts the cigar in his mouth. A shot later, it's back on his hand.
Continuity mistake: During the carriage stroll at the park, the sky light sometimes becomes clearer instead of darker.
Continuity mistake: During the carriage stroll, the places in the background are not continuous between shots.
Continuity mistake: When Helen is trying to stop Hercules from beating her friend, her hair runs down along her back. A shot later, it's over her left shoulder.
Continuity mistake: During the sports scene at Central Park, the sky keeps swapping from slightly cloudy to dark grey to sunny... no continuity at all.
Continuity mistake: When Hercules arrives at the ballpark, the guy in a leather jacket moves closer to the iron pole on the left.
Continuity mistake: When Hercules overturns the cab, the light suddenly changes from daylight to dusk.
Continuity mistake: When Hercules is drying his chest on the boat, his hairstyle keeps changing between shots.
Continuity mistake: When Hercules talks to the messenger, he moves the curtain aside, and the window becomes visible. In the close-up, the curtain is covering the window.
Factual error: Zeus' wife is Hera not Juno. Juno is the wife of Jupiter, god of Roman mythology, not Greek.
Continuity mistake: When the bad guys chase the chariot, there are 5 of them in the car, 3 in front and 2 in the back. Suddenly, the bald man behind the driver is on the opposite side, and the guy he replaces has vanished, leaving 4 in the car. When the car arrives at Central Park, all of the 5 baddies are back in the car, but the actors are different: the chubby copilot with a hat is now a thin man wearing sunglasses, for example.
Revealing mistake: The bear is a blatant person in a cheap disguise, who even struggles to walk four-legged but needs to bend the rear legs to achieve it.
Revealing mistake: The footage of the Statue of Liberty is of very poor quality, revealing its stock footage.
Visible crew/equipment: When Zeus checks his crystal ball to see Hercules' whereabouts, two big lights standing on tripods are reflected on the right side.
Continuity mistake: When the lady in the plane freaks out, check the position of the hands of the man sitting behind her and the papers he holds. They keep changing positions all the time.