Skullshell Crusteroid

The Skullshell Crusteroid is a species of crustelore that makes armor out of bones.

=In fanon games=

In Pikmin Evolution
The Skullshell Crusteroid is a species of crustelore appearing in Pikmin Evolution as a boss. It is a creature of extremes, having a giant black and white body resembling a skull, hence its name, and deep red eyes, but having short legs and claws for a creature of its size. At first, its behavior seems too simple for a creature of its class, simply using its claws to grab any Pikmin in front of it while stomping on anything under its body to crush them. Rather, it's how the Skullshell Crusteroid performs these actions that makes it dangerous, as it has its species' signature ability to increase the length of its claws and legs with bones scattered around its territory. This not only improves the range and strength of the claws but also increases the height of the Crusteroid. It also makes the legs capable of skewering any Pikmin under its feet. When combined with how easy it is to go under the creature, these factors make the creature much more deadly than it initially appeared, especially with its crushing attack.

Defeating the Skullshell Crusteroid is no easy feat. Pikmin must swarm the creature's six legs and attempt to shatter each and every one of them, all the while dodging the creature's frontal claws, and leaders must recall them for them to avoid its crushing attack. When one leg is damaged, the Skullshell Crusteroid quickly reconfigures its other legs to maintain balance, meaning that for each leg destroyed, it loses height, making the main body easier to hit. However, the Crusteroid becomes more agile due to having fewer bones to move when walking. Only by destroying every leg does the Crusteroid fall and reveal a soft underbelly to attack for extra damage, but after a while, it will shake any attackers off and rebuild all six of its legs, starting the cycle all over again. Aside from Pikmin attacks alone, there are many ways to destroy the legs of the Crusteroid, namely through the use of syrups. The legs are very susceptible to explosions, which dismantle them instantly, but scatter the pieces everywhere, which the Crusteroid can simply recover to rebuild its body. Acid, however, melts and destroys the bones. Alloy Pikmin are the best Pikmin type to fight the creature with as their crushing immunity works wonders when the boss' most dangerous attack involves dropping its heavy body on its prey. However, their slow speed means the Crusteroid can easily grab them with its claws. Regardless, the sheer height and surprising strength of the Skullshell Crusteroid make it one of the most surprisingly deadly enemies and shouldn't be taken lightly. When killed, its main body ruptures, revealing a piece of refuse, a good enough reward for such a tough fight.