Each backpack in Adventure Time Battle Party consists of a collection of in-game items that directly contribute to empowering the player's chosen champion. Within these backpacks, there are typically five distinct items, and players are granted points as they progress and level up within a match. These points can then be allocated among the items to augment the champion's statistics, such as strength, speed, defensive capabilities, or other specialized attributes.

It's important to note that a maximum of four points can be allocated to any single item within the backpack. This limitation adds a layer of strategic decision-making, compelling players to balance their allocations for maximum effectiveness.