Powers and Stats
Tier: At least 2-C, likely High 2-A
Name: Grand Star
Origin: Mario Bros
Age: Unknown
Classification: Cosmic Artifact
Powers and Abilities: Cosmic energy manipulation, spatial manipulation, super speed, flight & levitation, can create galaxies, can create portals of space and time, can create dark matter which can erase anything that touches it from existence, is capable of granting cosmic powers to other beings (such as matter consumption, black hole creation, enhanced durability/speed/destructive abilities/etc)
Attack Potency: At least Multi-Universe level (Far superior to the Power Stars, which enabled Bowser to create universe-sized realms within the walls and paintings. He had to of created the time in the painting as well, as time and space cannot exist without the other. Further evidenced by how Tick Tock Clock is a world entirely based on time. If he didn't, Mario would have Infinite speed for moving in timeless realms. Now, why universe-sized? Because just Bob-omb Battlefield is described by Mario as a parallel world of some sorts when he calls it a world and compares it to the main verse's realm as a world. We also know Bowser made this pretty much instantly. And we know Bowser created these worlds individually, because Toad describes them as Bowser's "separate" worlds), likely High Multiverse level+ (In the first Super Mario Galaxy alone, threatened the very fabric of the universe. Bowser's Galaxy Reactor is repeatedly called a universal threat, and was stated to decide "The Fate of the Universe,". This might seem like feats and statements that warrant a Low 2-C rating, but one particular area, the hyper-spatial Mystery Circle/Matter Splatter galaxy is a space that exists in the normal universe and can be flown to normally from the Observatory and back as always, with the street perpetually phasing in and out of the space like how a 4D object would with our universe, making Matter Splatter a 4D hyperspace and the container for it, or the normal universe itself, 5D. This means the Grand Stars can destroy 5-D space-time, since the destruction caused by the Galaxy Reactor would encompass all of reality. As universes in the wider Mario cosmology are parallel to each other, the painting worlds from Super Mario 64 that blatantly have time within the space of their containers made by the Power Stars would also be 5-D, putting Bowser's feat for creating them at this tier)
Speed: At least Massively FTL+ (Faster than Power Stars), likely Immeasurable (Grand Stars have the power to cross space and time {Translation by ZeroTwo}).Starship Mario is able to travel through space and time to reach new worlds. Matter Splatter Galaxy is also referred to as a hyper-spatial street, and Power Stars are capable of reaching that space)
Durability: At least Multi-Universe level, likely High Multiverse level+
Range: Multi-Universal, likely High Multiversal+
Weaknesses: None notable