Poseidon (Lostbelt)

Poseidōn (ポセイドーン) is a God appearing in the Atlantis Lostbelt in Fate/Grand Order.

Background
Within the world of the Lostbelt, there was a shift from the Greater History of Man in 12,000 BC that ultimately led to the Age of Gods continuing into the modern day. Poseidon still exists in 2019, protecting the Black Hole leading to Mount Olympus.