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Perseus- the son of mortal Danae and the god Zeus.
Medusa- a monster with living venomous snakes in place of hair
KING ACRISIUS-  was the king of Argos. He was warned by an oracle that he would be killed in time by a son born to his daughter Danae.
Polydectes- was the ruler of Seraphos and fell in love with Danae. He was killed by Perseus by showing him the head of Medusa. 
Dictys-  was a fisherman and brother of King Polydectes He discovered Danaë and Perseus inside a chest that had been washed up on shore.
ANDROMEDA - On the way back to Seraphos Island, Perseus stopped in the kingdom of Aethiopia. This mythical Ethiopia was ruled by King Cepheus and Queen Cassiopeia. Cassiopeia, having boasted her daughter Andromeda equal in beauty to the Nereids, drew down the vengeance of Poseidon, The oracle of Ammon announced that no relief would be found until the king exposed his daughter Andromeda to the monster, and so she was fastened naked to a rock on the shore. Perseus slew the monster and, setting her free, claimed her in marriage.
HERMES AND ATHENA- Hermes was the son of Zeus, the messenger of the gods and protector of the travelers. He gave Perseus a magnificent curved sword. Athena was the Greek virgin goddess of reason, intelligent activity, arts and literature. She was the daughter of Zeus; her birth is unique in that she did not have a mother. Instead, she sprang full grown and clad in armour from Zeus' forehead. She gave Perseus a bright shield to look unto it so that he will not turn into stone