Bergion was a demigod and a son of Poseidon.
Having obtained the Cattle of Geryon as his tenth labour, Heracles was passing through Liguria, on his way back to Mycenae from Iberia. Bergion and Albion were supported by a numerous army. The battle that followed was fierce. Hercules and his army were in a difficult position so he prayed to his father Zeus for help. With the aegis of Zeus, Heracles won the battle and both brothers were killed.