The Postmaster Penguin is a character referred to in an issue of Postbag from the Hedge. The postmaster apparently oversees the letters of KGP Agents, omitting potentially confidential information or withholding them entirely. The postmaster does not appear in-game.
- Like most penguin-related content in RuneScape, the postmaster is a reference to the real-world Cold War.
- Jagex. Postbag 34 - "Transcript:A SUBLIMINAL EVIL MESSAGE: Read this postbag!", Letter 6, by Private . RuneScape Postbags from the Hedge.