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When Percy,Annabeth,and Grover get in the prize car to get out of the Lotus Casino, there are blinking lights on the border of the windshield. But when they get to the Hollywood entrance of Tartarus, there are no more blinking lights. See more...

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Percy Jackson & the Olympians: The Lightning Thief (2010) - 8 corrections

starring Catherine Keener, Logan Lerman, Melina Kanakaredes, Pierce Brosnan, Rosario Dawson, Sean Bean, Steve Coogan, Uma Thurman (add more)

Genres: Adventure, Fantasy

Comments made in brackets are corrections from other visitors. To submit your own corrections for mistakes, just click "edit" under an entry, then choose "correct entry". You can also submit corrections for corrections, if you think a mistake has been unfairly removed.

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When Percy is fighting the Minotaur, it charges at him and gets its horn stuck. Just after this you can hear Grover asking Percy if he's OK. But he doesn't say "Are you OK, Percy?!" He says, "Are you OK, Malone?!" [He says no such thing. What he actually says is "Percy, behind you!"]
Edit Corrected by wizard_of_gore
When the trio are in the Lotus Casino and Percy sees the pearl first, it is on number 15 on the wheel. But later when they are leaving and Percy takes it, it is on number 33. [It's an active roulette table where people are playing. Plenty of time has passed, so the last time the pearl landed, it was on a different number.]
Edit Corrected by wizard_of_gore Time
The pigeons that are near Percy's window of his house vanish and reappear. [Copied verbatim from IMDB.]
Edit Corrected by Grumpy Scot
In the seen where Persephone stops the hell hounds from attacking Percy, Annabeth and Grover, she should not be there if the summer solstice was coming. She would be with her mother, Demeter, during spring and summer. [She's not forced to leave in the summer, merely free to leave. With a possible war brewing, she can easily choose to stay where she is safe. If you continue reading the books, her mother even eventually joins her for safety reasons.]
Edit Corrected by White Lock Time
In the scene where Percy and his friends are fighting the Hydra, Percy begins to wildly swing his sword to cut of their heads. At one point, he slices off the middle head which breathes fire, and it grows back. This is incorrect as the middle fire breathing head cannot be chopped off. [According to who? The movie takes some liberties with established myth.]
Edit Corrected by Grumpy Scot
When the older woman is turned to stone, Annabeth is trapped because the woman's stone hand is clutching her wrist. When Percy smashes the arm with his sword, she easily removes the stone hand. But she shouldn't be able to; the hand remains intact and is still clutching her wrist in exactly the same way. [Hitting it hard enough to shatter the arm could easily crack the hand making it easier to remove. Also, Grover smashes the arm not Percy.]
Edit Corrected by Grumpy Scot
When Medusa first notices Percy she puts her glasses on the crazy lady's statue, but when they are later seen with the head she has glasses on. [Well yeah, one of them put the glasses on the head to make it safer to carry around.]
Edit Corrected by Grumpy Scot
When Percy, Grover, and Annabeth go to meet Hades, they find his wife Persephone with him. This is impossible, as Persephone only lives in the Underworld during the winter seasons and the movie is repeatedly proved to take place during the summer. In Greek mythology and The Lightning Thief, the seasons are caused because her mother, Demeter, is sad that she is away from her daughter and causes the crops to wither. [1 - this is a modern interpretation of Greek Mythology, there are several departures from the classical Greek myths. 2 - it's always winter somewhere. The ancient Greeks wrote all mythology centered around their own culture and immediate surroundings. Through the centuries Persephone may have left Greece and settled somewhere in the southern hemisphere.]
Edit Corrected by BocaDavie