A celebrated hero in Krypton's golden age, Jo-Mon was responsible for bringing peace to Krypton after years of bloody civil war between the city-states of Kandor and Argo City that saw death and slaughter on a mass scale that threatened to impact the planet negatively for generations to come.
Alongside his allies, members of both the El and Zod Families, he helped defend Argo City from falling to the Kandorians.
