|Books character||TV character|
When Fred Johnson dies in Babylon's Ashes, Drummer becomes the acting head of Tycho Station and its people. Styling herself after Fred Johnson, Drummer maintains a close relationship with Holden.
Drummer becomes the fifth president of the Transport Union. She contracts James Holden and the Rocinante crew to head to the Freehold system to impose punitive action after their repeated violations of the Transportation guidelines for the ring gates.Laconian Empire and their ship, the Heart of the Tempest. With the Laconian Empire in charge of the Transport Union, their headquarters in moved to the capital of Laconia and has Drummer moved there as well.
- At the time of Nemesis Games, Fred Johnson says he has been working directly with her for 3 years and knew about her 10 years before that.
- Saba reveals Drummer's first name in Chapter 5 of Persepolis Rising, Camina. Chrisjen Avasarala also uses her first name in the novel.