I love the way Rook Thomas and (to a lesser extent) Myfanwy are mirrored in Gestalt.
They were literally given their jobs to balance each other out and Gestalt is one person with multiple bodies at the same time, and Rook Thomas and Myfanwy are two people with the same body at different times.
Once Myfanwy takes over, she triggers the events that cause a massive change in Gestalt's life and (number of) bodies.
Gestalt is a Grafter traitor and Myfanwy, while hiding things from the Checquy, chooses to make an alliance between them and the Grafters. Gestalt is desperate to live at any cost and Rook Thomas chooses to let go of her life and do everything she can for Myfanwy.
I also really love their relationship going from efficient colleagues to all out enemies without any hesitation - there's something really satisfying about it.














