Siren is a playable dragon in Dragalia Lost.

Official Description

A cheerful, singing dragon who lives on the shore. Though her songs have a reputation for sinking ships, that actually has no basis in fact. In reality, she just loves singing, and would never wish harm or ill on anyone.

Official Description (Pop-Star Siren)

The singing dragon is finally able to stand on the stage of her dreams—and with an almost frighteningly beautiful voice, she aims to bring joy to everyone. Her outfit was made by her friends, making her an icon of dragalia.