The podcast episodes provided focus heavily on the topic of Chaos Space Marines, a key antagonistic force in the Warhammer 40,000 universe.

Episode CODEX CRISIS: CHAOS SUCCEEDS WHERE CUSTODES FAILED delves into the nature and activities of Chaos Space Marines, describing them as 'clad in baroque power armour bedecked in macabre trophies and infernal iconography' who 'do battle alongside growling battle tanks, monstrous Daemon Engines, and thronging masses of cultist followers'.

Additionally, ABYSSAL CRUSADE: The Conquest of The Eye Of Terror | Warhammer 40k Lore discusses how 30 Space Marine Chapters were corrupted into new Chaos Space Marine warbands and legions after being sent into the Eye of Terror, a major gateway to the Warp and the domain of the Chaos Gods.

The THE THOUSAND SONS: ALL IS DUST | Warhammer 40k Lore episode also focuses on the Thousand Sons, a Traitor Legion of Chaos Space Marines dedicated to the Chaos God Tzeentch.