Hera was first mentioned in the video game Dragon Ball Z: Super Butōden 2, when Goku asks King Kai if he knows Bojack and King Kai responds that Bojack and his henchmen are the last survivors of Hera. The only known survivors of Hera are Bojack, Bido, Kogu, Bujin and Zangya.
Hera is the name of Zeus' sister and wife in the Greek pantheon. She is the goddess of women and marriage, although ironically her husband constantly cheats on her. Her name also acted as part of Heracles' namesake.