Eagle is a recurring antagonist in the beginning of the series. As the player, in control of Andy and the Orange Star forces, fights their way through Blue Moon and Yellow Comet, Eagle harasses them on occasion. He appears to hold a grudge against Andy.
Once Orange Star's military reaches Green Earth, Eagle reveals the reason for his grudge: Andy was seen leading an army of Orange Star troops on a sneak attack into Green Earth's territory, killing many of Eagle's men. Eventually, it is revealed that the "Andy" that Eagle saw was actually a clone created by Sturm, and Eagle joins forces with Orange Star. He begins to see Andy in a new light, as more of a worthy opponent than an enemy to be destroyed, and by the end of the game the two are more "friendly rivals" than enemies.