Veklin

Veklin was a Time Lord Commander during the Last Great Time War. She was Cardinal Ollistra's most loyal servant. (AUDIO: The Side of the Angels)

The Doom Coalition
Commander Veklin and Acting Castellan Volstrom were ordered by Cardinal Ollistra to spy on the Doom Coalition, (AUDIO: Songs of Love, The Side of the Angels) with Veklin pretending to be part of the Chancellery Guard loyal to Cardinal Padrac. She helped kill temporal refugees by travelling between their ships using her Battle TARDIS. Later, she was hit by the Nine with his regen gun and arrested River Song. (AUDIO: The Crucible of Souls)

After being ordered by Padrac to secure the Eighth Doctor's TARDIS, Veklin decided to return to Ollistra and revealed her true loyalty to River Song, Liv Chenka and Helen Sinclair, dematerialising with the latter two to avoid being caught by Padrac. River transported the Doctor into the TARDIS, which he took over control of from Veklin. (AUDIO: Songs of Love)

In New York City, Ollistra ordered Veklin to look after Liv and Helen. She escorted Joanie Carrington to meet the Sharpshooter before being led to the City Museum by, where the Eleven shot her and let a Weeping Angel send her back in time. Veklin bided her time for sixty years, becoming known as the Sharpshooter, before picking up where she left off and saving Liv and Helen with Joanie, who told her to let the Angels take her and to protect the city. Outside the planning office, she witnessed Ollistra's regeneration. (AUDIO: The Side of the Angels)

The Last Great Time War
Veklin and Strato picked up Susan Campbell in a crumbling Battle TARDIS (AUDIO: Sphere of Influence) after she responded to a hypercube. (AUDIO: All Hands on Deck) Whilst Strato was killed, Veklin also picked up Ian Chesterton and travelled with him and Susan in a Diplomatic TARDIS to the Sense Sphere to negotiate with the Sensorites. She was affected by the Dalek-Sensorite parasite. (AUDIO: Sphere of Influence)

Susan and Veklin were sent to Florana to discover a Dalek agent. She taught Veklin how to paint. After discovering that Monty had been killed, she stayed with Faith where she learnt who was the killer. The Ogrons took her prisoner. (AUDIO: The Uncertain Shore)

Rasmus sent her and Susan to Oresaia to investigate an anti-dalek weapon. When the Orrovix escaped she tried to coordinate the escape. She went to find her old friend who was assigned her. Looking through the data in the system, she realised that Rennis wasn't exactly who he said he is. (AUDIO: Assets of War)

She registered that Susan had made an unauthorised entry into her TARDIS. (AUDIO: The Shoreditch Intervention)

Veklin served under Cardinal Ollistra during the War and was assigned to find the War Doctor after the explosion of the Time Destructor. Later, she found him on the planet Keska. (AUDIO: The Innocent)

After the return of the Doctor in Gallifrey, she was asked by Ollistra to lead a team consisting of the Doctor, Bennus and Arverton to rescue the Time Lord strategist Seratrix. Because the Doctor does not want to be under the team, he left them and went to the Null Zone before them. Veklin, together with the remaining members of the rescue mission, followed the Doctor to Keska. (AUDIO: The Thousand Worlds) While infiltrating the citadel, Arverton died under her watch before they reached Seratrix and the Doctor. (AUDIO: The Heart of the Battle)

During the assault of the Dalek Time Strategist on Grend, Veklin, now a Commander of an entire Time Fleet, brought reinforcements for Ollistra and the War Doctor. (AUDIO: The Lady of Obsidian)

Behind the scenes
Veklin was credited as "Captain" for The Crucible of Souls.