Trivia: As already noted, Hercules wears a lionskin which is made out of Scar. In the myths of Hercules one of his great tasks was to kill a vicious lions and he kept the skin ever since. But it's more than just a joke or a cameo that he wears Scar, for both Scar and Hercules were animated by the same man (Andreas Deja).
Trivia: There is a scene where Hercules is being painted on the side of a vase or something. Hercules is wearing a lion skin - when he throws the lion skin down, if you look carefully, you can see that the lion skin is made out of Scar, from The Lion King . (00:55:20)
Trivia: Greek mythology has a Philoctetes. He is however not a sartyr who trained heroes, he is a human who gets bitten by a snake en route to Troy. Because of the stench from the wound he is left behind and Odysseus returns to pick him up towards the end of the war.
Trivia: When the villagers flee in terror as their city is being attacked by the Cyclops Titan, you can hear a Wilhelm scream.
Trivia: During Meg's song, there is a shot with the Muses as five singing busts in a row, with the second one from the left broken. This is exactly the same as the singing busts in the Haunted Mansion at any Disneyland.
Trivia: Originally, Hades was going to be portrayed as a more serious villain. It wasn't until James Woods auditioned for the part that Hades was re-written as a comic-relief villain with a great sense of humour.
Answer: I always assumed one of the gods told him how to get there after they won the battle. The underworld in Greek mythology could be traveled to by mortals, albeit extremely ill-advised.
Jordan Oxendine