No. She was not unfaithful to Zeus.
Hera's entire family were gods, goddesses and demigods.
Well for one your talking roman, Hera is her Greek name. Hera is a nice person to the gods, but for demigods shes horrible, especially the demigods of her husband, Zeus. She despises all demigods and wants them gone
laernian hydra, heracles, hera, karkinos
Yes, Zeus had demigods he hasn't in a while because he married Hera.
Hepheastus and Ares are the more known children that she had but she also had: Eris, Hebe, Eileithyia,
Leo is what the Constellation of the Lion is called; it was once the Nemean Lion whom Heracles defeated and Hera put into the stars. It had no offspring, demigod or not.
Yes, Hercules.
Any one of the major Greek gods..
In Greek mythology, yes.
Yes hera's symbol is the peacock.
no it does not have demigods.
She sometimes used her powers to help heroes she approved of and sometimes did bad things to the women zeus had slept with and his demigods (children that are half mortal and half god).