#in a sort of playful combat to hera's chera epithet

[hermesmoly]

Is Zeus the only god to have an epithet that means his wife's spouse (Zeus Heraios)? If so that's really cute

I think so yes! The closest we have to a like-sounding epithet is Aphrodite Areia, which could signify the non-conventional relationship she has with Ares, but the more typical interpretation of it is her "warrior" aspect on its own.