Game Boy Horror SP

The Game Boy Horror SP is a special, equippable accessory item Mario and Luigi can receive from Professor E. Gadd at the Starbeans Cafe in Mario & Luigi: Superstar Saga and its remake. The item is the seventh and final gift they can receive from him after they create the final non-duplicate brew. When a brother equips the item, the duo receives a rarer item after all enemies are defeated, though in the remake, the rarer item is received only if the brother equipped with the item deals the final strike to the enemy. The item is an upgraded version of the Game Boy Horror from Luigi's Mansion, a dual reference to the Game Boy Advance SP and the Game Boy Color.

In-game description

 * Mario & Luigi: Superstar Saga - Defeat foes and always get rare items! (Rare Itemizer)
 * Mario & Luigi: Superstar Saga + Bowser's Minions - Defeat Foes and always get rare items! (Item Fiend)