Majenta Pryce

Biography
Majenta Pryce is a green humanoid woman, possibly from the planet Vessica, who originally ran the Hotel Historia chain. Following the last great Time War, however, the chain was economically devastated as people turned their backs on time travel. Retreating to 21st century Earth, Majenta established another Hotel Historia, using time travel tech of dubious provenance to send paying guests into different time zones throughout Earth history. The Tenth Doctor stumbled onto Majenta's operation while confronting the Graxnix in 41st century London, and used the faulty tech to travel back to the hotel.

When the Graxnix followed the Doctor, they started to kill people at the hotel. Majenta quickly decided to leave with her unpaid bills, but the Doctor prevented her escape. He used her time travel tech to imprison the Graxnix outside time, then ensured she was taken away to debtors' jail.(DWM: Hotel Historia)

An apparently coincidental visit to the Thinktwice Orbital Penitiary in Earth's distant future brought the Doctor back into Majenta's world. The harsh regime and crude psychological methods utilised by the penitiary left Majenta with little or no memory of the Doctor, or of her life prior to the events of their first meeting. The Doctor restored Majenta's memory of him, but was unable to restore anything else.

Together, they uncovered the truth behind Thinktwice, that it was being used as a feeding ground for the Memeovax, who fed on the prisoners' memories. When one of the Memeovax attempted to invade Majenta's mind, she unleashed a blast of power that destroyed all the Memeovax on Thinktwice. Afterwards, in the TARDIS, Majenta quickly co-opted the Doctor into helping her resolve her memory issues. (DWM: Thinktwice)

Personality
Majenta is confident, resourceful, and intelligent. She is also intensely determined; whenever something goes wrong, she's willing to do whatever it takes to put it right.

A key part of Majenta's personality is her sense of superiority. She has little compunction about ordering others around, or letting them know exactly what she thinks of them. Despite this, however, she does have a streak of compassion, watching out for those she comes to care about.

Powers
Majenta has a barrier in her mind, blocking mental intrusion. When Thinktwice originally removed her memories, they didn't seem to encounter it; however, when they tried a second time, they found the barrier blocking them. When a Memeovax breached the barrier, Majenta manifested a mysterious 'shadow-force' from her hand, destroying all Memeovax on Thinktwice. Neither she or the Doctor know what this 'shadow-force' is, or where it comes from.

Quotes
to be added