Ollistra

Cardinal Ollistra was a high ranking Time Lord involved in the Last Great Time War.

Capturing the Eleven
After the Eleven opened the Dark Universe, she conversed with Ace about what to do with The Eleven and decided to invade Gallifrey. She was one of the last Time Lords alive and was the most senior after Romana II and her high council were the first to be destroyed by the Eleven's plans. She helped to then trap the Eleven and gloated slightly when the universe was restored. (AUDIO: Dark Universe)

Opposing Padrac
With Gallifrey being taken over by Cardinal Padrac, Cardinal Ollistra sent Veklin and Volstrom to spy on him and learn of his plans whilst also recruiting his opposition on the High Council. Ollistra and the opposition councillors formed the Planning Council in New York City, starting to build an Enclave with the help of and the Weeping Angels to survive the end of the universe. (AUDIO: Songs of Love, The Side of the Angels)

Ollistra showed the city to the Eighth Doctor and was admonished by him for it, although she continued to believe that it was the right thing to do. When the Sonomancer caused a power cut for the benefit of the Angels, Ollistra and the Doctor returned to the planning office where the Eleven pushed her from the roof. Witnessed by Veklin, she regenerated and said that "Gallifrey must stand". (AUDIO: The Side of the Angels)

Working with the Eighth Doctor
During the Last Great Time War, Ollistra was given special dispensation to conduct operations by the War Council. She was off-world by the time of Rassilon’s coming to power. (AUDIO: Assassins)

Ollistra organised a battle over a planet to trap a Dalek fleet and test the effectiveness of the Type 120 TARDISes. In initiating the battle. Ollistra had caused the destruction of the planet and corrupted its timeline. Her troops captured the Doctor and refugees from the Theseus, Bliss, Rupa Maguire and Quarren Maguire. She ordered the Doctor be pressed into service. (AUDIO: Echoes of War)

Returning to the base on the Moon of Tenacity, she placed the Doctor under the command of Commander Harlan and had his companions kept for interrogation. She threatened Bliss that she could just let her disappear as a casualty of the War if she didn’t comply. She wanted to find more about Rupa and Quarren. When a Dalek hunter drone was caught on the Moon, she ordered an evacuation and reluctantly allowed Harlan to let the Doctor go. As the Daleks invaded, she caught the Doctor as he was leaving and threatened to shoot him so that she could get his next incarnation to join the war. (AUDIO: The Conscript) She was interrupted by the arrival of the Daleks broke in the structure, leaving all her guards behind to escape in the Doctor's TARDIS with him and his companions. She discovered that the Daleks were using a reversal wave on the system. She was after the CIA weapon that was stored on the Theseus. Using material she got from the CIA, she discovered that Quarren was a missing CIA weapon that could rewrite reality with his mind who had hidden using a Chameleon Arch. After they crashed on Jedris, she used a hypercube to summon Time Lord forces. When they arrived and engaged the Daleks by accelerating time, she used a Temporal Flare to attract a Battle TARDIS. Despite the Doctor being lost in the shifting landscape of Jedris, she ordered the TARDIS to leave. Angry, Quarren returned to his Time Lord identity to save him, sending Ollistra back to Gallifrey. (AUDIO: One Life)

Ollistra was informed when the Twelve’s memories of Uzmal appeared to have been unlocked by a Dalek interrogation. She recruited the Doctor and Bliss to help her investigate the Daleks’ interest on the planet, as the mission was far from the front lines. (AUDIO: In the Garden of Death) She and Major Tamasan took control of one resistance submarine, putting the Doctor in charge of a second one. When the Doctor managed to make contact with the dying Ourashima Ollistra enthusiastically accepted its offer of its powers of precognition and was infuriated when the Doctor refused. (AUDIO: Jonah) Afterwards she informed the Doctor of suspicious irregularities in Bliss’ timeline. (AUDIO: State of Bliss)

Ollistra sponsored a Time Lord project to weaponise the Vashta Nerada against the Daleks by altering their biodata so that they could consume Dalekanium. Ollistra met the Doctor, who had arrived at the station independently, just as the Vashta Nerada began to fight back. After the Doctor had got her to safety, Ollistra pleaded with him to join the fighting. The Doctor refused, reminding her he was a doctor, not a warrior. (AUDIO: Day of the Vashta Nerada)

Working with the War Doctor
Ollistra was present when a Gallifreyan reported the destruction of the Dalek fleet and the death of the Doctor. Horrified, Ollistra lamented Time Lord soldiers Bennus and Arverton when they allowed the War Doctor to activate the Dalek Time Destructor instead of them, a blast no Time Lord could survive. Ollistra attended the Doctor's funeral, sceptical of his demise. With her strong belief that the Doctor was still alive, she sent Veklin to search for him. After gaining control of the Eye of Harmony of the Doctor's TARDIS, Ollistra pulled the Doctor from Keska when he refused to go home. (AUDIO: The Innocent)

She later built a team, consisting of the War Doctor, Veklin, Bennus and Arverton, to rescue Seratrix, a Time Lord strategist, in the "Null Zone". (AUDIO: The Thousand Worlds)

It was later revealed that the scheme underneath the mission was to purge the idea of Seratrix to make peace with the Dalek. The reason why she sent the "rescue team" was because she believed that the Doctor, Bennus, and Arverton were followers of the belief of Seratrix so they should be killed together with him.

After the War Doctor stopped the plan of the Daleks to explode the thousand planets, Ollistra came and revealed her plan to the Doctor. After that, she brought the Doctor to the future of Keska to show how the planet recuperated from the invasion of the Daleks. (AUDIO: The Heart of the Battle)

Ollistra caught up with the Doctor after he used the Annihilator to erase the Technomancers, placing him under arrest as a war criminal. (AUDIO: Legion of the Lost)

She was looking for the Doctor in order for him to understand the whether they should use the anima device. She then decided to take on a mission to Asteroid Theta 12 to discover the secrets that they were the war council was hearing. She was reluctant to save Jarad. She discovered the research that the Daleks were doing. The Doctor got her to use the anima device in order to destroy the Dalek fleet. The Doctor left her behind on the Asteroid. (AUDIO: A Thing of Guile)

Ollistra followed the Doctor to the Neverwhen as his TARDIS was used to travelling to strange places. She was interested in the results of the weapon that created the Neverwhen, especially because it resurrected Time Lords. The Doctor later used it to create a state of peace where both Daleks and Time Lords were farmers. Ollistra planned to use it along with the Neverwhen to destroy Skaro. (AUDIO: The Neverwhen)

Ollistra had Heleyna to contact the Doctor when the quantum shield around Earth was breached. (AUDIO: The Shadow Vortex)

She went to a retreat to gain information about a Dalek Spy in the High Council, where she was taken by General Fesk to be used as a bargaining chip between the Sontarans and both the Daleks and the Time Lords to let them into the war. She discussed the beginnings of the war with the Dalek Time Strategist. She was rescued when Fesk was trapped with the Doctor with their temporal weapon. (AUDIO: The Eternity Cage)

She was then taken prisoner by Heleyna and who was the spy. Ollistra then used the Battle TARDIS' to save the Doctor when he was falling through the Rovidian atmosphere. She fell to the lower levels of the TARDIS and ended up in the infirmary. Heleyna wanted her as she was one of the War Council and had access to the Eye, to punish her for the death of Heleyna's grandfather and prevent the war from ever happening. After the Daleks were stopped she helped the Doctor to set the time rotor to get them out of the time vortex. (AUDIO: Eye of Harmony)

The Doctor and Ollistra were then captured and sent on an escape capture to be picked up by the Daleks. The Doctor managed to avoid capture by flying the capsule to Beltox. Her main concern was getting back to Gallifrey, but when the Daleks arrived she first organised the retreat of the locals and then the defence of Beltox. (AUDIO: Pretty Lies)

On Grend, she managed to get a message to the war council and asked for a complete Time Fleet to be sent there. Freel arrived to take her back to Gallifrey, but she was annoyed that only a fleet of 20 Battle TARDISes were sent. She then got those 20 TARDIS to defend Grend. Later when the Doctor arrived, he came with the Fifth Time Fleet and Commander Veklin. (AUDIO: The Lady of Obsidian)

On returning to Gallifrey, she was the highest-ranking Time Lord not in deep hiding due to the Enigma. She started to not trust Leela because of her savagery. When the Enigma arrived on Gallifrey she thought that the Daleks had won. She helped to explore the dimension she was in and helped with the Doctor's theorising of what was going on and why Leela was being communicated. She thought that the TARDIS was dead and didn't like the Doctor's patronisation. She welcomed the Enigma found the compassion using Leela and asked the Enigma to destroy the Daleks instead. (AUDIO: The Enigma Dimension)

Ollistra signed an order allowing a team of Time Lords, headed by Councilor Voltrix, to open a rift into the universe of the Great Vampires, allowing them to destroy a fleet of Dalek saucers. (COMIC: The Bidding War)

Personality
Ollistra was a heartless politician, so much so that Bennus and Arverton joked over the existence of Ollistra's emotions, and was also deeply patriotic, allowing Gallifreyans to sacrifice themselves for the greater good. She displayed a discontent with the Gallifreyan armed forces, telling two soldiers "The Doctor is worth a hundred of you... people!". (AUDIO: The Innocent)

Ollistra was regularly callous and decadent and retained the mindset that any act done in the name of Gallifrey's victory of the Time War was a necessary means to that end; to this extent, she threatened to force the Eighth Doctor to regenerate in the hopes of making him more co-operative in the war effort. (AUDIO: The Conscript)

Relationship with the War Doctor
Although Ollistra respected the War Doctor's efforts for Gallifrey, she on occasion described him as "a thorn in [the Time Lords'] side" and "an embarrassment for most of his lives". When he was presumed dead, Ollistra confessed that she felt the universe "a far more dangerous place without [him]", displaying that she had some level of recognition for his pursuits and actions. (AUDIO: The Innocent)