A Supreme Smasher is a toy based on a dinosaur. Its body is white, with red scales covering its limbs. It has four legs ending with four toes, and is muscled arms have four violet claws. On its back is a set of five canisters colored purple, red, and yellow, which is attached to its body with green straps on its chest. When possessed by a Marionette, its eyes are yellow, and it bears the Heartless emblem on its neck.
Kingdom Hearts III
Supreme Smashers are some of the more dangerous enemies found in Toy Box, and as such caution should be taken when fighting them. The best way to fight them is by using a Gigas and keeping them stunned with constant attacks, while also dodging their Heat Breath attack which they will prioritize while Sora is aboard a Gigas.
However, if a Gigas is not available, such as in the first wave of Battlegate 5, it's best to keep a distance where you will more reliably be able to dodge their long range attacks, especially the Dash Claw attack which is the best option for getting a reprisal, as blocking it will enable the usage of Risk Dodge. The Heat Breath attack can be easily reacted to by watching for when its mouth starts glowing blue, and the Plasma attack is slow enough that it can be outmaneuvered by simple Dodge Rolls.
If engaging them at close range with physical combos, try to keep the target isolated so that it's easier to react to any incoming attacks from the other Supreme Smashers. While up close, watch for its Double Claw attack, which is signaled by it leaning back slightly before attacking with its claws.