King Seyfried is a story character in Etrian Odyssey III: The Drowned City. The Abyssal King, he rules the mysterious Deep City and has sworn to eliminate the corrupt Deep Ones no matter the cost. Upon meeting the party, he reveals the true nature of the Yggdrasil Labyrinth and the Calamity. His servant Olympia acts as his personal soldier, messenger and confidant. He's the final boss of the Porcelain Wish route, as the Automaton King.