Clementina Yendl was an operative of the Vanus Temple of the Officio Assassinorum in mid-M32 during the War of the Beast. During the war, she was dispatched by Grand Master of Assassins Drakan Vangorich to lead a force of Assassins, infiltrate Mars, and discover what secret project the Adeptus Mechanicus was building that involved the Orks.
Yendl's team was subsequently discovered by Fabricator-General Kubik, and one of her assassins was killed by a force of 50 Sicarian Ruststalkers. Compromised, Yendl took shelter in an underground Mechanicum facility where she revealed that she was working with Magos Eldon Urquidex in foiling Kubik's plans. Yendl then came across a facility housing tens of thousands of Ork corpses, and she became determined to discover what Kubik planned to do with them.
- 1: Predator, Prey (Novel) Chapter 9
- 2: Throneworld (Novel) Chapter 18
- 3: Echoes of the Long War (Novel) Chapter 23