Considered to be the second most powerful figure in all of the Undersea Realm, Grand Duchess Mab, Queen of Sirens
and ruler of Sirenia is one of greatest sirens to have ever come to power. She looks down on many of the other races
that comprise the Coral Kingdoms, and only reluctantly obeys the orders that come from the throne of Aquastria.

However, this has not softened her ambitions and goals of obtaining ultimate power, and her frequent machinations
to gain more influence has often exasperated King Leo. Not exactly a full villain like Chrysalis or the Storm King,
she is more a ‘gray’ baddie. She does help the good guys from time to time, but only to her advantage.

She frequently puts on the most extravagant and elaborate plays in the Great Opera House of Sirenia,
and if often any show’s header star (much to her delight). She has a fierce rivalry with the mermares,
whose beauty and voices threaten the prestige that she has worked tireless to build up.