Calu

Calu does not appear in the surviving sources as an independent origin mythic figure but rather as an epithet or cult-aspect of the Etruscan chthonic fire god Śuri (Suri). In surviving scholarly summaries Calu functions as a name applied to the underworld-power of Śuri and, by usage, as a synonym for the underworld itself. The term fuses sense of darkness and subterranean authority, so that the name can refer both to a divine persona (the dark/underworld aspect of Śuri) and to the underworld-place governed by that power.

Descriptions in the source material emphasize lupine attributes: Calu is identified by wolf-related iconography, such as representations that show either a wolf-like appearance or a human figure wearing a wolf-skin cap. The term's etymological sense of "dark, darkness" further frames devotional and iconographic representations as chthonic and infernal in character. No additional preserved costume colors, garments, or detailed physical descriptions are recorded in the supplied sources beyond the wolf-skin cap and general darkness imagery.

Because Calu is presented primarily as an epithet of Śuri and as a name for the underworld, the "abilities" ascribed are cosmological and role-based rather than episodic: Calu embodies chthonic and subterranean/fire authority associated with the realm of the dead. The supplied summaries do not attribute narrative acts (such as specific causation of disease or possession) to Calu; instead the figure functions as an underworld power whose cultic enactments employ wolf symbolism and whose authority corresponds roughly to the Greek concept of Hades in comparative terms.