Alpos

In the surviving literary account found in Nonnus's Dionysiaca, Alpos is described as a son of Earth (Gaea/Gaia), placing him among chthonic, earth-born monstrous offspring in Greek mythic imagination. The figure is attested in this epic episode as a localized, law-defying giant whose parentage is explicitly linked to Earth; beyond Nonnus's narrative there are no substantial attestations or cultic traditions tied to the name, and modern summaries note that the character does not appear elsewhere in the Greek corpus and received no known cult.

Nonnus's epic depicts Alpos with an overwhelmingly monstrous physiognomy: he is repeatedly said to possess many arms (a feature compared to the Hundred-Handed Ones), and his head is described as covered with vipers, an image compared to Medusa's serpentine hair. The poem furthermore employs epic images of voracity — a 'row of mouths' and descriptions of entombing victims in his gullet — which present him as multi-mouthed and capable of swallowing people and animals in the course of the narrative.

In the Dionysiaca Alpos acts as a territorial predator: he seizes, devours, and entombs wayfarers, shepherds, and livestock that pass his rock at Pelorus, and his presence is said to have driven away pastoral and craft activities from the surrounding countryside. The only recorded means of ending his depredations in the sources is martial/theomorphic: Dionysus confronts and slays Alpos with his thyrsus. The sources do not record any ritual powers, cultic capacities, or regular cycles of activity for Alpos beyond this narrative episode.