Rookie

Rookie is a character and boss that appears in Mario & Luigi: Superstar Saga. He is the alter-ego of Bowser who has lost his memory and was taken under the wing of Popple, the Shadow Thief.

Appearance
Rookie is bascially Bowser in appearance except that he wears a blue bandana on his head.

History
Sometime before, Bowser was launched out of a cannon on Stardust Fields and lost his memory after crashing. Popple soon found Bowser and decided to take him under his wing and dubs him Rookie. Rookie then follows Popple around helping the bean thief in any way possible. Soon, at the Chateau de Chucklehuck, Rookie and Popple ran into Mario and Luigi. The Mario Bros. recongize Rookie as Bowser but Rookie shrugs off the claim only replying that the two look familiar to him. Popple then orders Rookie to aid him in fighting Mario and Luigi which he agrees to. However, Rookie and Popple are defeated but run off into Chucklehuck Woods in order to find the treasure.

After exploring around, Popple and Rookie run into a dead end with the guardian of Chucklehuck Woods, Chuckleroot, blocking the way. Popple and Rookie then decide to wait out nearby until someone (presumely the Mario Bros.), came along to unblock the path. Sure enough, after Mario and Luigi get past Chuckleroot, Rookie and Popple race off ahead to get the treasure. Unfortunately for them, they are captured by Bubbles who has them tied up over a barrel of Chuckcola. However, the barrel is soon revealed to be a monster that sends Rookie and Popple away out of Chucklehuck Woods.

Rookie and Popple are seen again in the basement of Woohoo Hooniversary obtaining the Beanstar. However, Mario and Luigi arrive on the scene and all of them decide to fight for it. Rookie and Popple lose yet again but, as any more action could be taken, a Peachbot falls into the basement and it's singing causes the Beanstar to go made. Rookie, Popple, Mario, and Luigi all grab onto the Beanstar and, as they crash through the ceiling, Bowser regains his memory but not before falling into Stardust Fields and his body being used for a new evil.

Trivia

 * If Rookie is defeated first in any of the two fights, Popple himself will run away.
 * Rookie is the first alter-ego of Bowser in Mario & Luigi: Superstar Saga. The second is Bowletta.