Pokemon Crystal Cheats

Umbreon

Level up your Eevee until it trusts you very well. Then, level it up at night to get Umbreon. REMEMBER: Your Eevee will not automatically evolve as soon as it trusts you. It will most likely be above level 42 when it evolves, when it learns Take Down. To see how tame it is, go to Goldenrod by the gym. There is a lady in a house there who tells you how tame your Pokemon is. As long as she says, "I get the feeling it really trusts you," you're doing well.