Once feared as a malevolent entity that poisoned Scotland's waterways, the Caoránach was actually performing a sacred duty—infusing the waters with protective elements that would repel the ancient evil lurking in the deepest parts of Loch Ness. For centuries, the MacTavish clan has worked alongside this misunderstood cryptid, learning its secrets and helping it maintain the alchemical balance that keeps the loch's darker forces subdued.

The Caoránach Keeper possesses the unique ability to alter the chemical and mystical properties of water, creating protective barriers that prevent malevolent entities from crossing between realms. Its senses can detect the slightest disturbance in the loch's energetic field, allowing it to respond swiftly to incursions by the ancient evil or those who would disturb the balance. Though physically powerful with webbed claws that can shred stone and scales impervious to most weapons, the Keeper's true strength lies in its profound connection to the loch's mystical currents and its encyclopedic knowledge of alchemical formulas passed down since prehistoric times.

Acting as both sentinel and alchemist for the Guardians of the Loch, the Caoránach Keeper maintains the ancient runic barriers throughout the waterways while teaching worthy disciples the art of water transmutation. When disc golfers venture too close to sensitive sites around the loch, the Keeper manifests as sudden mists or peculiar water movements to guide them away from danger, sometimes leaving behind cryptic alchemical symbols that Angus MacTavish interprets as warnings or prophecies.