Umbreon evolves from Eevee when its friendship stat has reached its maximum. The friendship stat is a hidden statistic that is used to measure how much a Pokémon has bonded with a player. In order for Eevee to evolve, it needs to be leveled up at night.Continue Reading
In order to get an Umbreon, the player first needs to acquire an Eevee. In Pokémon X and Y, Eevee can be caught on Route 10 in the grass areas along the path. When capturing Eevee, use a Luxury Ball to raise its friendship stat.
The friendship stat is raised by making sure the Pokémon is cared for at all times. This means keeping its health up and keeping it in the party. Putting Eevee in a PC box or battling with it until it faints can lower its friendship stat.
Giving a Pokémon an item to hold can help raise its friendship level. A soothe bell is designed to raise a Pokemon's friendship levels at a higher rate.
To evolve, Eevee needs to level up once its friendship stat has reached its maximum. If evolved during the day, it becomes Espeon. If evolved at night, it becomes Umbreon. Press the B button to stop the evolution process if it starts during the day.