The Erymanthian Boar is a monster that is Hades featured briefly in the movie attacking a village, he is then killed by Hercules with a bow and arrow, he is later shown depicted in a painting being eaten by Hercules and Phil.

2011-01-29 1924

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"Listen well, all of you!", "Erymanthian Boar,"
is nothing more than an insignificant stub.

It is in desperate need of more content.
So says Maleficent:
the Mistress of All Evil.