Torterra is a tall, bulky, quadrupedal Pokémon resembling a tortoise, with a large shell covering its back. There is a single, oak-like tree and three triangular, stony extensions resembling mountain peaks on the top of the shell. There is a patch of brown, resembling soil, next to the tree. A white rim surrounds the shell and forms a diamond-shaped continuation on the front. Torterra's body appears sectioned, with the upper half being green and the lower half brown. Its mouth is jagged, which gives it the appearance of a snapping turtle. It also has a black nose. Its lower jaw is green and there are two large spikes protruding from its cheeks. Torterra's small, red eyes are encircled by a black ring. Its legs are thick and they have four toes each, which appear as if they are actually jagged stones. There are three toes on the front and one on the heel.
Torterra's large and clean shell supports the lives of many small Pokémon, which occasionally gather and build their nests upon the shell. Some are born and spend their entire life there. Torterra migrates in search of water, creating the illusion of "moving forests". However, it is typically immobile.
Multiple Torterra appeared in Detective Pikachu. They were genetically modified for their growing. Many normal-sized Torterra live in the facility, but gigantic ones, who are as big as mountains, lay dormant nearby.
This Pokémon was unavailable prior to Generation IV.
Torterra appears to be based on a snapping turtle and an ankylosaur, which is an armored dinosaur. Its large features and spikes may also be inspired by extinct Meiolania and Proganochelys turtles. In concept, it may be based on the World Turtle from various mythologies that carries the world upon its back.
Torterra may be a combination of tortoise and terra (Latin for ground).
Dodaitose may be a combination of 土 do (earth or ground), 大 dai (large), and tortoise. It may also involve 土台 dodai (foundation).