Argentius is was the chief scientist on Aquitar, who teleported the ShogunZords from Earth to Aquitar when the BattleBorgs were unable to fight a powerful new enemy. As a reward for his heroic efforts, Ninjor gave Argentius a duplicate of the Falconzord, the Silver Falcon ShogunZord. Ninjor also gave Argentius a Power Coin forged from his own powers. The Ninjor Power Coin allowed Argentius to become the Silver Alien Ranger. As the Silver Ranger, his symbol is a Falcon and his element is Thunder.