Shuckle

Shuckle is a dual-type / Pokémon.

It is not known to evolve into or from any other Pokémon.

Along with Pincurchin, Castform and Pyukumuku, it is one of the four starter Pokémon of the Mishi region.

Biology
Shuckle is a Pokémon that resembles a small turtle. Its body is yellow and appears soft. Until they are in use, Shuckle's limbs appear limp. It is encased in a very hard red shell that has many holes in it. The holes in its shell are rimmed with white. Rather than actively hunting and foraging for food like most other Pokémon, it collects Berries and stores them in its shell. The Berries inside are liquefied and fermented while they decompose by Shuckle's digestive juices, which it then consumes. Its digestive juices are also used to dissolve rocks so Shuckle can hide under them. It can be found in the mountains.

Pokédex entries

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Trivia

 * Shuckle's stats have the greatest standard deviation of all Pokémon, with 103.21, meaning they're the most uneven out of all Pokémon. Due to this extreme distribution, it is either the best or in the bottom three of every base stat:
 * Shuckle has the lowest base HP stat of all Rock-type Pokémon, with only two other Pokémon, Shedinja and Diglett, having lower base HP.
 * Shuckle has the lowest base Attack stat of all Bug- and Rock-type Pokémon, with two other Pokémon, Happiny and Chansey, tied for a lower base Attack.
 * Shuckle has the highest base Defense and Special Defense stats of all obtainable Pokémon.
 * Shuckle has the lowest base Special Attack stat of all Pokémon, tied with Feebas, Bonsly, and Alolan Sandshrew.
 * Shuckle has the lowest base Speed stat of all Pokémon, tied with Munchlax and Pyukumuku.
 * By using Power Trick, Shuckle can temporarily reach a base Attack stat of 230, which would be the highest of all Pokémon.

Design origin
Shuckle seems to be based on an endolith, an organism that lives inside porous rocks or animal shells. Given its category, the Mold Pokémon, Shuckle may be based on a fungus or mold variety of endolith. Its category could also allude to fungi such as cedar-apple rust, which bears a strong resemblance to Shuckle, or fungi-like slime molds.

Given its Bug typing, Shuckle may also draw inspiration from scale insects—small, shelled parasites that produce a sweet fluid called honeydew that attracts other insects. In particular, it may be based on the barnacle scale, with characteristics of actual barnacles. This species is part of the Coccidae family, also known as "tortoise scales", which may explain Shuckle's resemblance to a turtle or a tortoise. It could also be seen as a reference to the food fermentation process, with its Rock type alluding to the pottery used to store and ferment aliments in some cultures, and its Pokémon category referring to some fungi used in cultured foods.

Shuckle may also have been based on certain varieties of mollusk, as it shares some characteristics with them, including the shell, the muscular but limp-seeming feet, the use of acids to receive food or to break down obstacles, the liking for fermented foods, and living close to the water. Its worm-like aspect may also take inspiration from a nematode.

Name origin
Shuckle may be a combination of shuck (a husk or pod) or shackle and barnacle or turtle.