The White Bull
The story is based on the Greek mythological tale of Europa and the bull, where the white bull is the king of the Greek gods, Zeus, in disguise. Zeus, the sky and thunder god of the Olympic pantheon, often wore a disguise when romantically pursuing mortal women, so as to avoid the eye of his wife and sister, Hera.
Hera (Marvel Comics)
Hera is the Queen of the Olympian pantheon and wife of Zeus. Neptune and Pluto are her brothers, Demeter and Vesta are her sisters, and Ares, Hephaestus, and Hebe are her children, all by Zeus. She was born on the island of Samos, and now resides with the rest of the pantheon in Olympus.