Opalescent Hayscthing, one of the richest mares in Equestria, who controls the world's largest criminal empire, operating under the name Goldhoof, who schemes to one day rule the entire world.

Tyrus Caesar, the Crown Princess of Equestria, next in line for the throne, one of the finest agents within the Equestrian Intelligence Service, who is permanently assigned to stopping Goldhoof's schemes.

One wouldn't expect the two to be lovers, romantically involved despite their rivalry, their interactions on the job more games than true battles to the death.