Shadegrub

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The Shadegrub is a species of mandiblard that hides in the shadows and attacks by swarming.

=In fanon games=

In Pikmin Evolution
The Shadegrub is a species of mandiblard that appears in Pikmin Evolution. They are among the most unique enemies in the game, being both considered a normal enemy and boss enemy, as well as being one of the few enemies found in only one area, that being the den called the Cavern of Fangs. As a den that takes place completely in the dark, the Shadegrubs appear as the den's primary threat. At first in the first three floors of the den the only evidence of their existence are clumps of spongey blue egg sacs which initially act as trampolines for the captains to bounce across in the dingy and dark cave they are found in. However when you begin a fight with the Emperor Bulblax on floor four the Shadegrubs will hatch from the egg sacs and complete the fight for you, instantly killing the emperor and forcing your captains to flee from the hoard of shadowy grubs. These pitch-black slugs attack in massive hoards that swarm at anything that moves, eating them and growing their swarm. Individual Shadegrubs have slightly varied sized from half the size of a standard Sheargrub to twice the size and have a shadowy, goo-like texture. You can't fight Shadegrubs directly at first, as anything that enters the swarm's territory will just be consumed, so instead you need to manipulate the swarm to your benefit when traversing the next few floors of the den. Naturally for dark and scary creatures, they hate light, and they actively avoid any major sources of light such as patches of glowcaps or lightbulbs as the glaring beams of energy disintegrate them on impact, so as a result these sources of light can be used as safe havens away from the swarm. Another element of the Shadegrubs that could prove to be helpful is their appetite, while they do voraciously eat anything in their path, that includes objects that may impede your characters. For instance while Pikmin can't destroy a local Bloatstool as well as other difficult to kill enemies, the Shadegrubs can, so you must find a balance between avoiding the swarm and letting the swarm help your squad. Once you reach the final floor you gain access to a bed of hot coals which you can have Elixer Pikmin dig into to collect the flaming rocks within. These rocks are important as on top of the weakness to light, the Shadegrubs also hate intense heat, so you can use the coals to kill the Shadegrubs. However the Shadegrubs will combined their bodies and form a massive Shadegrub will a big gapping maw that you need to fight as the end of den boss. The giant Shadegrub has a similiar attacking style to the Mama Sheargrub in that it will attempt to flail about and crush your Pikmin, but the Shadegrub swarm is much larger so its more dangerous. The only way to take appart the swarm is to wait for it to charge into a wall, that way you can feed it a hot coal to cause it to explode and reveal several stunned Shadegrubs, destroy each and every one of them to defeat the boss. After a while all the surviving Shadegrubs will join back together, making a smaller but faster and more agile combined form. Once all the Shadegrubs are killed, all of them explode each having a tiny piece of refuse that a single Pikmin can carry each, alongside several assorted sparklium seeds. A very dangerous foe from a frightening land indeed.

In Pikmin Rebirth
The Shadegrub is a species of mandiblard appearing in Pikmin Rebirth. They only appear in the deepest and darkest caves, acting as one of the more frightening encounters within them; part of the reason is due to having pitch-black bodies, slug-like anatomy, and glowing red eyes. They also are frightening due to their behavior, as Shadegrubs are opportunistic scavengers, only appearing if a corpse is left alone for too long. When they find a notable piece of carrion, they will swarm the corpse and quickly devour it, with more Shadegrubs taking its place. Shadegrubs are highly dangerous as they can quickly swarm and devour a squad of Pikmin. What makes them even more dangerous is the fact that these swarms can become even bigger by exposure to poison, electricity, and acid, all common methods of dealing with other enemies. Due to these facts, the best way to deal with them is to flee, as, despite the size of their swarms, Shadegrubs are easy to distract. Any large pieces of carrion will redirect pursuing Shadegrubs to it for devouring purposes. Additionally, they are attracted to sources of energy; while they should be lead away from electricity, fire and light can prove to be the swarm's downfall as the heat can quickly burn and shrivel up the swarm, eventually killing it. While Shadegrubs aren't considered boss enemies, killing a swarm still drops a large amount of sparklium and the occasional relic, meaning that there is good reason to hunt these creatures down. Still, their sheer numbers and frightening speed make them one of the most formidable opponents to face.