Goofs

On Charon's ferry when Io is training Perseus, she ends up lying down on the floor of the boat with coins all around her. The positions of these coins changes between shots, and some disappear completely.

When the witch attacks Eusebios there is a shot from the eye view camera rushing towards him, though the witch holding the eye is not the one who grabs him.

Perseus' gladiator sandals change from opened toed to closed toed sporadically from scene-to-scene.

When Medusa creeps up on Ixas from behind and he turns around to face her, there's a string of hair stuck horizontally to his forehead where there wasn't in the previous shot.

While in Medusa's lair, Ixas reminds Eusebios to keep his eyes down and then begins to turn away, but in the very next shot, he's still facing Eusebios and turns away a second time.

The story of the birth if Perseus as told by Io is incorrect according to Greek Mythology. The correct myth follows.

King Acresius of Argos wanted a successor so he went to the oracle at Delphi and asked about his future. He was told that he would have a daughter who would bear a son. King Acresius was ecstatic, his grandson would succeed him as king of Argos. But as he is leaving, the Oracle warns him that the boy will kill him as soon as he reaches adulthood. He is distraught. A few months later his wife gives birth to a daughter they name Danae after the Daneids.

The Danaeids were three women cast into the underworld, Tartarus by Zeus where they were doomed to pour water into a bottomless basin until the end of time as punishment for the murders of their husbands.

Acresius does not allow Danae to marry for fear of her bearing a son. One day he has a huge tower built where he tricks Danae and her nurse into entering. He locks them up inside. Zeus has been in love with beautiful Danae for a long time. Zeus cannot visit Danae in his normal form demands the penalty for looking upon a god is death. He changes himself into golden rain which seeps through the walls and roof caressing Danae and impregnating her.

Nine months later she gives birth to a boy whom she names Perseus. She tries to hide the baby but King Acresius hears the cries and has the door opened where he finds the child. Danae tries to explain what happened, but Acresius does not believe her wild tale and has the nurse and guards executed for allowing a man inside. That leaves the problem of what to do with the child. He decides to leave it up to the gods by placing Danae and Perseus in a great casket which is set adrift in the sea.

Zeus watches over the two of them guiding the casket to a small island named Serifos. A fisherman named Dictus, who is of royal blood, discovers the casket and takes in the mother and child. He treats them as though they were of his own family. One day the tyrant king named Polidetes bumps into Danae and is consumed with passion due to her great beauty. He doesn't dare try to take her by force because Perseus now a strong young man would hack him to pieces.

The king throws a banquet to honor his future wife and demand every young man, including Perseus bring horses as gifts. Knowing Perseus has nothing he demands he bring the head of a Gorgon, an impossible feat. There are three Gorgon sisters, Steno, Muriale, and Medusa. The first two are Immortal, leaving Medusa as the only one that can be beaten. Perseus accepts the challenge and so begins his epic adventure.

The whole story can be seen in the sky where you will see the constellation Perseus, the Andromeda Nebula, and the star Cassiopeia, all grouped together. Right next door is the constellation of Pegasus, the winged horse which Perseus rode.

Perseus spots Andromeda staked out by the sea as a sacrifice because Queen Cassiopeia had said she was more beautiful than the Nereids, who were sea nymphs, not any of the goddesses. Perseus flies to Queen Cassiopeia and says he will rescue Andromeda if he can have her hand in marriage. The myth does not say he used the head of Medusa, only that he killed the sea monster. The myth does not name the sea monster as a Kraken, which was not a word in ancient Greek. Furthermore, Cepheus, Cassiopeia, and Andromeda were not associated with Argos where King Acresius ruled at the time Perseus rescued Andromeda.

Differences from mythological sources (including misuse of the names Titan and Kraken) are exempt from being listed as goofs, as are historical inaccuracies, especially when caused by reliance on Renaissance/Baroque artistic depictions.

When Spyros discovers Perseus as a baby with his dead mother Danae in the casket, Perseus' mother has brown hair. In a later flashback, Danae is blonde. Royal people have always been fond of using cosmetics including hair coloring.

Zeus has an American Bald Eagle which would live nowhere near Greece. Since this is fantasy, we can assume that the gods can transcend the laws of nature and geography.

At the end of the movie Andromeda says to Perseus that Argos will need a leader now, but both her and Perseus were facing the other way when her father was killed (distracted somewhat by the humongous Kraken trying to eat them) he was also obstructed by the crowd of panicking people.

In the Pegasus' final scene, its horseshoes are visible.

In the filming locations in the end credits, Dinorwic quarry is credited as being in "Wales, [in] England". Wales and England are different Countries in the United Kingdom.

According to Greek mythology, Cepheus, Cassiopea and Andromeda are respectively the King, Queen and Princess of ETHIOPIA. In the movie however they are represented as royals of Argos. Argos was/is not a city located in Ethiopia. Furthermore as Ethiopians they should have been dark skinned.

In Greek mythology king Acrisius was the father of Danaë, not her husband.