Light Queen
From Tardis Wiki, the free Doctor Who reference
The Light Queen was the controlling influence of the Lux. She was trapped inside a mirror which was then buried on a planetoid and eventually dug up by Dorium Maldovar. When the Lux became aware of where she was, they controlled the Beacon to try to reclaim her, but they were thwarted by the Eleventh Doctor. (AUDIO: The Light Keepers)
