Galleia
From Tardis Wiki, the free Doctor Who reference
Galleia was Queen of Atlantis and the wife of King Dalios. Her marriage to the king eventually bored her and she grew to desire someone more charismatic, but still loved him enough that she wished to see him live. The Master convinced her to help him overthrow her husband. She turned against him when she learned that Dalios was dead. She perished when Kronos destroyed Atlantis. (TV: The Time Monster)