There are many characters in If The Emperor Had a Text-To-Speech Device. Here they are listed by affiliation; official canon characters are listed separately from characters original to TTS.
Imperium of Man
High Lords of Terra
- Ecclesiarch Decius XXIII
- Fabricator-General of Mars
- Grand Provost Marshal
- Master of the Administratum
- Commander Militant of the Imperial Guard
Loyalist Primarchs
- Rogal Dorn
- Roboute Guilliman
- Vulkan
- Corvus Corax
- Lion El'Jonson
- Jaghatai Khan
- Leman Russ
- Ferrus Manus
- Sanguinius
Space Marines
- Marneus Calgar
- Cato Sicarius
- Uriel Ventris
- He'Stan
- Azrael
- Asmodai
- Belial
- Chaplain Grimaldus
- Kaldor Draigo
Adeptus Mechanicus
Imperial Guard
Inquisition
- Fyodor Karamazov
- Toquemada Coteaz
Chaos
Chaos Gods
Traitor Primarchs
Chaos Champions
- Abbadon the Despoiler
- Ahzek Ahriman
- Lucius the Eternal
- Kharn the Betrayer
- Typhus
- Fabius Bile
- Cypher
- Miriael Sabathiel
Daemons
Other Characters
Eldar Gods
Dark Eldar
Orks
Tau
Necrons
Tyranids
Others
Original TTS Characters
Adeptus Custodes
Inquisition
- Ordo Malleus Inquisitor
- Ordo Hereticus Inquisitor
- Inquisitor Adrielle Quist
- Inquisitor Javerticus
- Inquisitor Facesmash
- Calato