Arteria Cranium is location in Armored Core: For Answer.
Arteria Cranium is the largest of the Arteria facilities and also the most important, making it one of the most fought over in the war between ORCA and the League. Based on the actions of the player, the Cranium is either seized by ORCA, resulting in the grounding of the Cradles and redirection of the power to the Ehrenburg cannons, or it is defended by the player and Wynne D. Fanchon, allowing the Cradles and the League to continue existing.
- If the player chooses to side with Wynne D. Fanchon and protect Arteria Cranium, the interior of the Cranium will be a bright blue. In contrast, if the player seizes for ORCA, the interior is a deep red.
- In the hard mode of the ORCA ending, Otsdarva becomes one of the opposing NEXTs, and also reveals that he was indeed Maximillian Thermidor and had faked his death.