Crawdaunt is a primarily red, crustacean Pokémon with a tan underside. It has circular eyes set in deep sockets and a large, star-shaped growth on its forehead. The upper and lower halves of its underside are separated by a pattern of angular red shapes, and there are two blue stripes on its throat. Its forelimbs have two large pincers with spiked edges and tan lower halves form. There are two sets of hind limbs. The foremost pair are simple claws with two spikes, while the rear pair are large and thick with two white claws. A yellow triangle marks the base of its lobster-like tail.
Crawdaunt is a very violent Pokémon that lives in ponds. Because of its constant challenges to battle, no other Pokémon wants to inhabit its territory. Any that do venture too close are tossed out of its pond with its pincers. An experienced Crawdaunt will be covered in scars from countless battles. However, it must molt regularly and its shell is soft immediately after. Once its pincers fall off, Crawdaunt turn timid until they grow back. In order to protect itself, it burrows under stream beds until its new shell hardens. Unlike the meat found in the claws of Crabrawler and Clauncher, Crawdaunt's have foul smell and taste.
A Crawdaunt appeared in SM123. It first appeared during a flashback, where it was seen battling Kiawe's Turtonator before he caught it. With the help of Kiawe, Turtonator was able to defeat Crawdaunt. It reappeared in the present day, where it battled Sophocles and his Vikavolt and was eventually defeated by Savage Spin-Out. Kiawe revealed that he asked Crawdaunt to assist Sophocles to master the Z-Move.
Crawdaunt is the only Pokémon with a catch rate of 155.
Crawdaunt's name and appearance suggest that it is based on a red swamp crayfish, with its aggressive behavior reminiscent of the species' hardiness and status as an invasive species. However, its size and Dark type may also suggest it is based on a larger, more powerful creature, such as the lobster. Crawdaunt's shell may be based on batesian mimicry in association with Sharpedo, as it resembles an open shark mouth with a star on the nose.
Crawdaunt is a combination of crawdad or crawfish (alternate names for a crayfish) and daunt (to cause to lose courage) or taunt.
Shizariger is a combination of シザー shizā (scissors) and ザリガニ zarigani (crayfish).