Eevee evolves into Umbreon when leveled up with high friendship during the nighttime (Generation II onward, except for Pokémon FireRed and LeafGreen), except in areas with a Moss Rock or Ice Rock or while knowing a Fairy-type move.
It also evolves into Umbreon when leveled up with high friendship with a Moon Shard in the Bag (in Pokémon XD).
Eevee evolves into Glaceon when leveled up near an Ice Rock (Generations IV to VII) or when exposed to an Ice Stone (Generation VIII).
Eevee evolves into Sylveon when leveled up with a Fairy-typemove and either two levels of Affection (Generations VI and VII) or high friendship (Generation VIII), except in areas with a Moss Rock or Ice Rock.
Eevee has a Gigantamax form. Eevee with the Gigantamax Factor cannot evolve.
Eevee is a mammalian, quadrupedal Pokémon with primarily brown fur. The tip of its bushy tail and its large furry collar are cream-colored. It has short, slender legs with three small toes and a pink paw pad on each foot. Eevee has brown eyes, long pointed ears with dark brown interiors, and a small black nose. Eevee is rarely found in the wild and is mostly only found in cities and towns. However, it is said to have an irregularly shaped genetic structure that is easily influenced by its environment. This allows it to adapt to a variety of habitats by evolving. Eevee is the only known Pokémon capable of using the exclusive Z-MoveExtreme Evoboost.
As Gigantamax Eevee, it has become larger and more fluffy. The fur collar becomes longer with several triangular furs pointing straight up. The right ear has three red clouds surrounding it like a circle. Due to the fur becoming fluffier and luxurious, any enemies caught in it will lose the will to fight due to being enamored by its presence. Due to Gigantamaxing, Eevee becomes even more playful and rambunctious, desiring to play with its opponent and often unintentionally crushing them with its size.
In a flashback in Bonnie for the Defense!, an Eevee was taken away from Heidi, Kye, and Jay by their teacher, who told them they were too young to have a Pokémon. This caused them to develop a strong distrust of adults. Eventually, they learned that Eevee had actually been returned to its true owner after being delivered to Nurse Joy.
In JN079, Haruhi, a doppelgänger of Chloe, revealed in a flashback that her Espeon and Umbreon were originally Eevee she had when she was younger. Her female Eevee evolved into Espeon after she tripped and fell on top of her during the day, and the following night, her male Eevee evolved into Umbreon after protecting Haruhi and Espeon from a wild Crobat.
An Eevee appeared in The Escape, under the ownership of Karen during her childhood. It was one of the children captured by the Masked Man. It is presumed that this Eevee eventually evolves into her Umbreon, which she used to fight Green.
As in the games and anime, Eevee is notable in the TCG for being able to evolve into the most differently-named Pokémon cards, with its eight normal evolutions, as well as Dark forms of the Generation I evolutions and Espeon, and Light forms of the Generation I evolutions.
As adaptable a Pokémon as any yet discovered, Eevee's evolutionary progress changes to meet the conditions of its environment. So far, five evolutionary forms have been discovered and then catalogued for this unique Pokémon; Vaporeon, Jolteon, Flareon, Espeon, and Umbreon. All evolutions have special benefits.
Eevee appears as a Poké Ball Pokémon. It uses Take Down to hit opponents. It also appears as a trophy in both versions of the game.
NA: This Normal-type Pokémon is as adaptable to evolution as they come, with eight evolutions discovered thus far. If you pair that potential with its adorable features, it's no wonder Eevee is so popular! In Smash Bros., Eevee will attack a nearby opponent with Take Down. Sadly, this attack isn't incredibly powerful.
PAL: This adorable Normal-type Pokémon's ability to evolve in so many different ways makes it a popular choice with trainers. When brought out in battle, Eevee uses Take Down on the first opponent it sees, but...it's not very effective. Never mind. Eevee may not be the toughest Pokémon, but it'll always be one of the cutest.
In Pokémon GO, Eevee can be obtained by completing 3/8 and 4/8 of the Special Research, A Ripple in Time. Eevee’s Shiny variant could also be obtained by completing 4/6 of the time-limited Special Research set, Jump-Start Research.
If Eevee has a particular nickname, then once per nickname, it is guaranteed to evolve into the following, regardless of other conditions:
In the 2018 artbook, EVs, Motofumi Fujiwara revealed that Eevee was inspired by vague childhood memories of an unknown creature he encountered in the forest. Though it wasn't based on any distinct animal, Fujiwara mentioned that Eevee reminded him of a fluffy cat or dog-like creature.
Eevee and Eievui are the pronunciations of E-V, the first two letters in the word evolution.