Karotechia was the Nazi regime's occult intelligence programme — the German equivalent of Delta Green — dedicated to the weaponisation and exploitation of the Mythos rather than its containment. The programme was eventually defeated and remnants driven to South America, though splinter cells continue to surface. Hanover recovered Karotechia documents during her archive assignment that detailed their 1942 activities, including a memo declaring the Blackwater Initiative — involving final communion with Dagon — a decisive success, and a Delta Green field report from a precision raid against a Karotechia facility at Cap de la Hague that same year.
In the WWII North Africa arc, the relevant Karotechia cell operates under the name Scions of the Black Sun, led by Karl von Drexler. Karotechia documents recovered by H-Cell also describe a Ministry of Population and Purity programme involving reproductive experiments with Deep Ones along European coastlines, raising the question of whether their broader occult programme was an alliance with the Mythos or a sophisticated attempt to exploit it.