Im not 100% sure, but im 90% sure. Try evolving it during the night, and to get espeon, evolve during the day. Hope this helps! :D
You have to wait a while after you get to pick who evee will evolve into (umbreon) You have to wait a while after you get to pick who evee will evolve into (umbreon)
evolving evee at night
you have to evolve evee
No because leafgreen has no in game clock feature so to get umbreon you need to train an evee in a game that has an in game clock such as ruby or diamond then once evee has max friendship it will evolve to umbreon during the night time.
No but you start with two evee forms: Umbreon and Espeon.
at level 55
Either Jolteon, Vaporeon depending if you want an attacker (Vaporeon) ir a substitute passer (Jolteon).
it depnds were u evolve it
Golbat---> Crobat Evee---> Umbreon or Espeon
EVolve an Evee from happiness at night time.
level up evee at night with enough friendship
You buy Happiness in nighttime at the shop.