Ellen Kurokawa, also known as Cure Beat, is a main character in the anime series 'Suite Pretty Cure♪'. Initially introduced as the mysterious feline fairy Siren and an antagonist, Ellen experiences a profound transformation, eventually joining the Pretty Cure team as Cure Beat. She plays a vital role in the fight against the forces threatening Major Land. Ellen is known for her strong will, musical talents, and journey of redemption, becoming an invaluable ally and friend to the other Cures.