Sylveon is a quadruped, mammalian Pokémon covered primarily in pale cream-colored fur with pinkish feet, ears, and tail. There are two bows on its body, one on its left ear and one around its neck, from which two feelers adorn it. The bows are pale cream with pinkish centers, while the feelers are pale cream with pinkish and blue tips. It sends a soothing aura from these feelers to calm fights, and will also use them to "hold hands" with its Trainer. It has short, slender legs and small paws with three visible toes on each foot. Its eyes are blue with white pupils and no visible sclera. When its mouth is open, two pointed teeth can be seen on its upper jaw. Its furry pinkish tail is slightly curved in a crescent shape. Sylveon uses its ribbons to distract cautious prey before it attacks.
Sylveon appears as a trophy in the 3DS and Wii U versions of the game.
Sylveon is one of Eevee's various final evolutions. It has a lot of great attacks to use in battle, but it actually seems to be a peace-loving sort of Pokémon. Case in point, it can completely stop the flow of battle by moving its ribbonlike feelers in a way that charms its opponents into not wanting to fight anymore.
This Pokémon was unavailable prior to Generation VI.
Sylveon is also the only Eeveelution to not resist its own type.
If Eevee meets the conditions for evolving into Sylveon while also meeting the conditions for evolving into Espeon or Umbreon, Eevee will evolve into Sylveon regardless.
In contrast to the rest of the Eeveelutions' pointed ears, Sylveon's ears are large and rounded, giving it a resemblance to jackrabbits. Fairies were thought to be particularly active under the light of the full moon; because of this and the jackrabbit association, Sylveon could be based on the mythical Asian moon rabbit, which is often portrayed as a companion of the Chinese moon goddess Chang'e, who is often depicted wearing a robe adorned in many ribbons. In addition, Sylveon's tail has some resemblance to the tail of the viscacha.
Sylveon may be a combination of sylph, a mythological creature described as invisible beings of the air, or sylvan, a word referring to an association with woodlands or forests (where fairies are often depicted), and eon (an immeasurably long period of time, possibly referring to how long evolution takes naturally). Eon is a suffix all Eeveeevolutions share and was Eevee's English prototype name.
Nymphia is derived from nymph, a deity existing in Greek Mythology associated with a particular location or landform.