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.
Zeus (Marvel Comics)
During the "Dark Reign" storyline, it was revealed that Pluto has Zeus prisoner and holds a trial against him with Hercules helping his father. The jury consists of Zeus' enemies, with Pluto as a prosecutor. Ultimately, Zeus is convicted, and willingly drinks from the River Lethe, making him lose his memory and renounce his crown to Pluto. After drinking from the waters, he escapes, and is reborn as an adolescent, with Hercules and Athena realizing the reborn Zeus needs to be hidden from Hera. The child Zeus accompanies Hercules on an adventure in Svartalfheim, where he becomes disgusted with his son's apparently oafish ways, and expresses admiration for Thor. Upon meeting Thor, he is convinced that Hercules himself has virtues.