Thea Dearden Queen (born January 21, 1995), also known as Mia during her time in Corto Maltese, is the daughter of the late Malcolm Merlyn and Moira Queen, the adoptive daughter of the late Robert Queen (though treated unquestionably as his daughter throughout his life), the younger maternal half-sister of the late Oliver Queen, the younger paternal half-sister of Tommy Merlyn and Saracon, the adoptive sister of Emiko Adachi, the fiancée of Roy Harper, and the paternal aunt of William Clayton and Mia Queen.