Persephone

Queen Persephone is one of the minor characters in the Percy Jackson and the Olympians book series. She is the Greek goddess of springtime, flowers, vegetation, and fertility. She is the daughter of Zeus and Demeter, as well as the wife of Hades, therefore being the Queen of the Underworld. Her Roman counterpart is Proserpina.

The Last Olympian
Persephone convinces her husband that she likes Percy and that it will be ashamed to kill a hero so brave. Hades decides to imprison him instead. Persephone does try to object but she goes back to arguing with her mother. She, Demeter, and Hades come to their family's age with reinforcements against Kronos outside the Empire State Building. Seh turns all the scythian dracanae's spears into tsunflowers and reduces attacks from foot soldiers.