The origin story of 'Gleipnir's Keeper' begins with the forging of Gleipnir by the dwarves, who created the chain from six impossible ingredients: the sound of a cat's footfall, the beard of a woman, the roots of a mountain, the sinews of a bear, the breath of a fish, and the spittle of a bird. The Keeper was chosen by Odin himself to guard this chain, ensuring that Fenrir remains bound and the balance of the cosmos is maintained. The Keeper's journey is one of vigilance and sacrifice, as they must constantly watch over the chain and resist the wolf's relentless attempts to break free.

The physical properties of 'Gleipnir's Keeper' include a chain-like texture that is both smooth and unyielding, symbolizing the strength and resilience of Gleipnir. The tag is imbued with a faint, ethereal glow, representing the magical essence of the chain. It is lightweight yet durable, designed to withstand the rigors of the quest. The tag also features intricate runes that pulse with energy, signifying the Keeper's connection to the divine and their role in maintaining cosmic balance.

'Gleipnir's Keeper' influences events by serving as a constant reminder of the balance between chaos and order. The Keeper's presence ensures that the forces of chaos, represented by Fenrir, are kept in check, allowing the heroes to focus on their quest to Valhalla. The Keeper's vigilance and sacrifice inspire the players to remain steadfast and resilient in their journey.