Shroodle is a tiny shrew-like Pokémon with an almost hemispherical body, having four small white feet and a stubby tail. Its fur is gray on top and white on the underside, except for its black head, which takes up about half of its body. Shroodle's head contains large, yellow-green eyes with tiny black pupils; small semicircular ears on the sides; a single tuft of blonde hair on top; and a long, bulbous snout at the front. The snout contains a pair of sharp upper incisors, coated in a purple poison that can cause paralysis.
Shroodle has a mellow personality, but if angered, it will bite into the offender, inflicting them with its venom. It paints markings around its territory using a poisonous liquid with a sharp, unpleasant smell, in order to ward off intruders.
Origin
The shape of Shroodle's snout combined with the fact that it evolves into a Pokémon based on an aye-aye suggests that it may be based on a treeshrew, a small mammal from Southeast Asia closely related to primates and is believed to resemble fossils of the order's most ancient members. Its large eyes and evolutionary line could be inspired by mouse lemurs.
Shroodle may also be based on any species of shrew tenrecs in the genus Microgale, which are native to Madagascar just like the aye-aye. Tenrecs in general have the unique behavior of licking their paws and spreading their saliva around their territory as a method of scent marking. The venomous bite trait may be inspired by the fact that certain species of shrews are among the few venomous mammals, and have a venomous bite that they use to paralyze earthworms and other prey. Shroodle's particularly long and bulbous snout may be based on the Pyrenean desman, a species of shrew found in the Iberian peninsula.
Shroodle's overall body shape may pay homage to "Kilroy was here," a popular graffiti.
Name origin
Shroodle may be a combination of shrew (insectivore mammal), shrewd, and doodle.
Shirushurū may be a combination of 汁 shiru (juice), しるし shirushi (mark, sign), shrew, and シュルシュル shurushuru (onomatopoeia for rustling).