1UP, also known as Alex Kidd and Alex Doll, is an item from Alex Kidd in Miracle World, Alex Kidd in the Enchanted Castle, and Alex Kidd in Shinobi World, represented by a token in the appearance of Alex Kidd. When picked up it grants the player an extra life.
In Miracle World the player can purchase 1UPs from shops for 500 Baums, though they can also be found on interrogation boxes, either on a few specific spots or if the player escapes from a Ghost.
In Alex Kidd in the Enchanted Castle, they can be found inside black Treasure Chests.
In Alex Kidd in Shinobi World, they are generally found inside treasure chests and the design represents the Shinobi version of Alex Kidd.