Power Stars are Stars that appear in the Mario Series. Power Stars, unlike normal ones, can grant a one-way ticket to oblivon, and they must be collected to face the final Hater. In Super Ronald Galaxy, it is revealed that they are the power source of McDonald's. After discovering this, The King and Colonel Sanders stole them, and this made Ronald McDonald collect them in order to return power to all McDonald's restaurants. It has appeared in many platformers since.
Power Stars are just toys, but nobody cares.