When Eevee is loyal to trainer. And when it is, and it levels up at night, You'll own an Umbreon!
Raise it's happiness at night. (gain levels, give items and not faint.)
All forms of Eevee are as follows; Eevee Jolteon Espeon Leafeon Vaporeon Flareon Umbreon Glaceon
You must import him/her in from another game.
You have to make Eevee really happy while it's is evolving,there is no certain level that will make Eevee evolve.
By getting EEVEE to a high friendship level at night.
Make sure your umbreon has alot of happiness and lvls up in the night time ( 8.00PM-4.00AM). Give it a soothe bell to increase its happiness and you can also give it calcium, iron,etc. Don't let your eevee faint, make sure your eevee does not get poisoned, paralized or sleep.
Train your Eevee at night and with happiness. It will eventually evolve into Umbreon.
Eevee doesn't evolve into Umbreon with a stone. Eevee evolves into Umbreon when it is levelled up with high happiness during the night.
Eevee's Dark-type evolution form is named Umbreon. In the primary core games, Eevee evolves into Umbreon when it has full Happiness during the night.
Umbreon is the dark type evolution of Eevee
You receive an umbreon from evolving eevee. You need to befriend eevee and then engage in a battle (at night on the game) and it should evolve into a umbreon.
Make Eevee as happy as you can. For Umbreon, level it up at night. For Espeon, level Eevee up in the day.
you have to raise eevee at night
Eevee evolves to Umbreon when it has high happiness, and it levels up while it is dark.
To make Eevee evolve into an Umbreon, you have to level it up with high happiness at night.
You can get an umbreon by getting an eevee from bill in goldenrod city (in a house) and then you can evolve eevee into umbreon by making it happy and leveling it up at night time.
the best ones are Espeon Umbreon Glaceon Leafyeon and Vaporeon
There is no episode in which it shows Gary evolving into his Eevee into an Umbreon, all that is known is that he had his Eevee as of the episode titled "The Rivalry Revival" however he ended up evolving his Eevee into an Umbreon prior to a Johto episode that was titled "The Power Play."