Egle (イグル Iguru), also known as Igul, is the twin brother of Alex Kidd, son of Queen Patricia and King Thunder, and crown prince of Radaxian. In the past Egle had saved Princess Lora, being the player's character in the game Pit Pot, and is to be married with her.
After the departure of King Thunder, Egle assumed the task of the kingdom's rule, but for a short time. Soon Janken the Great would rage the land and imprison him in the Radaxian Castle. He would later be freed by Alex Kidd during his passage in this castle, and informs him that the Moonlight Stone Medallion is in the Kingdom of Nibana. After Janken's defeat, Egle was crowned the king of Radaxian, at least until the return of King Thunder.