Venusaur is a squat, quadruped Pokémon with bumpy, blue-green skin. It has small, circular red eyes, a short, blunt snout, and a wide mouth with two pointed teeth in the upper jaw and four in the lower jaw. On top of its head are small, pointed ears with reddish pink insides. It has three clawed toes on each foot. The bud on its back has bloomed in a large pink, white-spotted flower. The flower is supported by a thick, brown trunk surrounded by green fronds. A female Venusaur will have a seed in the center of its flower.
As Mega Venusaur, the flower on its back grows larger and two smaller pink flowers bloom, one on its forehead and one on its rear. The weight of the flower causes its legs and back to become sturdier in order to support it. Additional leaves with woody stems, which are supported by vines, are grown around the flower. Mega Venusaur also develops dark markings on its forehead below the new flower.
Venusaur uses its flower to catch the sun's rays to convert them into energy, which causes the flower to become more vibrant. The flower releases a soothing scent that attracts Pokémon and calms emotions. This scent becomes stronger after a rainy day. In the anime, Venusaur has demonstrated the ability to manipulate nature, release several vines from its back, and lead evolution ceremonies for Bulbasaur and Ivysaur. Frenzy Plant was its signature move in the past. This Pokémon is rarely found in the wild, but has been known to inhabit grasslands.
A Venusaur nicknamed Bruteroot appeared in Mewtwo Strikes Back, under the ownership of Corey. It was taken away from her by one of Mewtwo's special Poké Balls but was liberated by Ash along with the other confiscated Pokémon. Along with Ash's Charizard and Neesha's Blastoise, they were the only confiscated Pokémon not to be cloned and they had the same marks that Bulbasaurtwo had, indicating that it was likely obtained by Mewtwo through different means than the ones used to clone. Its clone reappeared in Mewtwo Returns. Corey's Venusaur also appeared in an alternate timeline of the main series that was introduced in I Choose You!, where it was seen battling Neesha's Blastoise; it is unknown if it holds the same nickname in that timeline.
In I'm Your Venusaur, a local legend states that a 300-year-old tree, the Venusaur Tree, was grown out of a Venusaur who protected the town from invaders many years ago. The Venusaur and its tree are considered the guardians of the town.
Gary has a Venusaur which was sent out with his other Pokémon to battle the giant Slowpoke in Ash vs. Gary.
A Venusaur was fantasied along with the other fully evolved Kanto Starters in Chinchou in Charge, where the Pokémon Association Chairman of Kanto and Johto explains to Bill and Janine the special privilege of entering the finals unconditionally after collecting the badges.
When Venusaur is released from a Poké Ball, it uses the move Earthquake, which acts similarly to Donkey Kong's Down + B attack. Any player caught in this will be sent flying.
Venusaur is also a Pokéfloat. The front half will push itself onto the screen first and play will then begin to move to the right after Snorlax leaves the screen.
Evolving from Ivysaur, this deceptively toxic Pokémon has a huge flower on its back that emits a cloying fragrance: the scent lulls its enemies into a state of calmness. Venusaur's flower synthesizes sunshine into pure energy for its SolarBeam move. Think of Grass-type Pokémon, and Venusaur comes first.
Mega Venusaur appears as a trophy in both versions of the game.
With a special type of Mega Stone called Venusaurite, Venusaur can Mega Evolve into Mega Venusaur in the middle of a battle. Not only does Venusaur get a large defense boost when it Mega Evolves, but the plants on its back grow so much, it looks like you're being attacked by a walking jungle. Now, that's got to be intimidating!
Venusaur was confirmed to be based on frogs by Ken Sugimori, in a Japanese interview that was discussing the Pokémon franchise in general. When asked to describe the basis of the design behind the Bulbasaur line, Sugimori had stated that it was "a creature that is something like a frog." In another interview, Sugimori described the origin and the basic themes of the original starter Pokémon: "[T]he experience of keeping small animals such as frogs (Bulbasaur), lizards (Charmander), and baby turtles (Squirtle) as pets gives the game a sense of reality and makes it easier to get into the game. I realized it might be difficult to make an emotional connection if the first partner Pokémon is a tough-looking character."
Venusaur's large, rounded snout; wide mouth; wide-set eyes; bumpy, wart-like skin; and quadruped-like movements are vaguely similar to those of certain amphibians, such as the common toad. Unlike Bulbasaur, Venusaur's "ears" have hollows, indicating that they are in fact ears and not glands, as seen in many species of frogs and toads.