What are the easiest Pokemon to catch that can breed with Espeon in Platinum?

Question

I have an Espeon but I wanted a Leafeon so I am just going to breed another Eevee and evolve that one.

Answer 1

If you have a female Espeon the Pokemon in the feild group is what you're looking for

http://pokemondb.net/mechanics/egg-groups/field

But if its male you can find Ditto in the Trophy Garden.