History
Alcyoneus was a Giant born in Phlegra. As long as he touched his native land, Gaea could heal any wound he suffered.[1]
During the Gigantomachy, the war the rebellious Giants waged on Zeus, he was the Giants' general. As Gaea would heal him as long as he sat foot in Phlegra, Zeus' son Hercules lifted him off the battlefield, dragged him across the border to neighboring Thrace and killed him.[1]