Mentioned in Piece of Mind, Dark Garden Lake, Chromium Maneuvers.

A paramilitary organization dedicated to defending the furry inhabitants of Ambara Down from human occupation and/or aggression. Its legal status status is vague, but it has existed for quite some time. Tsaibei Hrotan is known to have been a member (referred to as “General Hrotan”), during which time he was “the architect of the Sickle Bay Massacre.” Whether Prefect Durgavati was a member is unclear despite her describing herself as “a revolutionary.” She certainly seems keen to distance herself from them now.

• Ambara Defense Front (ADF)
• Landolf
• Percy
• Tsaibei Hrotan