Vigoroth is a white, sloth-like, bipedal Pokémon with a teardrop-shaped tuft of red fur on its forehead. It has stubby ears, two small, triangular teeth in each jaw, a brown lower jaw, and large eyes encircled by brown rings. There are two stripes on its back, which are also brown. Its arms are long, and its hands and feet have two sharp black claws. The undersides of its hands and feet have circular red pads, and its rear also has a baboon-like patch of red. The fur on its chest, tail, and sides of its maw are shaggy.
Vigoroth's heart beats ten times faster than it did as a Slakoth, and as such, it cannot sit still for even a minute. Attempting to stand still or sleep raises its stress level and agitates its blood. It likes to go berserk by spinning its arms to destroy anything in its path. It runs wild through the jungle. Due to its rampages, it is always hungry.
Vigoroth, the Wild Monkey Pokémon. Vigoroth is only comfortable going berserk, will destroy anything in its path by spinning both arms, and goes more berserk when done.
Vigoroth is always itching and agitated to go on a wild rampage. It simply can't tolerate sitting still for even a minute. This Pokémon's stress level rises if it can't be moving constantly.
Vigoroth is simply incapable of remaining still. Even when it tries to sleep, the blood in its veins grows agitated, compelling this Pokémon to run wild throughout the jungle before it can settle down.
It can't keep still because its blood boils with energy. It runs through the fields and mountains all day to calm itself. If it doesn't, it can't sleep at night.
Vigoroth is always itching and agitated to go on a wild rampage. It simply can't tolerate sitting still for even a minute. This Pokémon's stress level rises if it can't be moving constantly.
Vigoroth is simply incapable of remaining still. Even when it tries to sleep, the blood in its veins grows agitated, compelling this Pokémon to run wild throughout the jungle before it can settle down.
Vigoroth seems to be based on sloths, exhibiting traits most similar to two-toed sloths and ground sloths in particular. It also exhibits some similarities to Old World monkeys, particularly to baboons who have bright red rumps, short tails, and are known for violent outbursts just like Vigoroth.
Vigoroth's evolutionary line goes through three stages of energy, where Slakoth is lazy, Vigoroth becomes extraordinarily energetic, and later Slaking becomes lazy again. This may be a reference to the Sphinx's riddle, in which the baby crawls on four legs, the adult has the most energy and walks on two legs, and the old man walks on three legs, one of which is a cane. In the case of Slaking, two legs and an arm touch the ground in its most preferable position.
Name origin
Vigoroth may be a combination of vigor or vigorous and sloth.
Yarukimono may be a combination of やる気 yaruki (motivation) and 樹懶 namakemono (sloth).