Tobris Ekharth was the Master of the Administratum and a powerful member of the High Lords of Terra in mid-M32 during the War of the Beast. Blind in one eye which bore a long scar across his face, Ekharth was close to the powerful Lord High Admiral Lansung and one of the key members of his alliance that ensured his dominance on the Senatorum. During the war against The Beast, the de facto ruling triumvirate of Lansung, Ekharth, and Udin Macht Udo ensured Imperial inaction and internal squabbling.
Following Lansung's fall from grace after the appearance of an Ork Attack Moon over Terra, Ekharth abandoned his former ally and instead pledged his support to Juskina Tull and her disastrous Proletarian Crusade. Ekharth again abandoned his ally, this time Lord Commander Udin Macht Udo, when he was overthrown by Imperial Fists Chapter Master Koorland and the Inquisition.
Later, Ekharth was seen conversing with Drakan Vangorich, pleading with the Grand Master of Assassins to do something about Koorland and the Space Marines usurping of power from the High Lords. Vangorich regarded him with disgust. When Vulkan returned to lead the Imperium against The Beast, Ekharth was horrified when the Primarch broke administrative protocol and utilized Administratum resources without his own approval. Despite his timid protests, his protests were ignored by Vulkan and Koorland. Ekharth again led opposition to Koorland alongside Mesring, this time forbidding the creation of the Deathwatch. However when the Ork Attack Moon over Terra reactivated, Ekharth realized he was defeated and backed down.
After the war, Ekharth was opposed by the attempts of Vangorich and Inquisitorial Representative Wienand in naming Imperial Fists Chapter Master Maximus Thane as the new Lord Commander of the Imperium. However he was again overruled and backed down. Subsequently, Ekharth was among the High Lords killed by Vangorich in The Beheading. How he died is unknown, but he was replaced with an impostor that likely was a Callidus Assassin. This impostor later murdered Ekharth's allies, Lord Commander Militant Verreault and Lord High Admiral Lansung and went on to serve as the Master of the Administratum in Vangorich's puppet cabinet.
- 1: I Am Slaughter (Novel) Chapter 4
- 2: Predator, Prey (Novel) Chapter 6
- 3: The Last Wall (Novel) Chapter 1
- 4: Echoes of the Long War (Novel) Chapter 18
- 5: The Hunt for Vulkan (Novel) Epilogue
- 6: The Beast Must Die (Novel) Chapter 1
- 7: Watchers in Death (Novel) Chapter 2
- 8: The Beheading (Novel) Chapter 9