|This article is about branch of the Cult of Kosmos. For other uses, see Peloponnesian League (disambiguation).|
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- "The true blood runs red."
The Peloponnesian League was one of the seven branches of the Cult of Kosmos. The members of the Peloponnesian League were the members of the Cult who sided with the Peloponnesian League, supporting Sparta during the Peloponnesian War. They sought to control the Spartan warriors by turning their faith against them.
During the Peloponnesian War the Spartan misthios Kassandra embarked on a quest to destroy the Cult of Kosmos, tracking down each member and killing them. Eventually, she learned enough to identify the Sage of the League, demolishing the Cult's control of Sparta with his death.