Eevee, also known as the transform Pokemon, is a very popular normal type Pokemon. It is usually quite rare.
Real eeveelutions have different ways of evolving, depending on generation. The 1st gen ones are based on stones. They are Vaporeon, Jolteon, and Flareon. Flareon is considered to be the worst eeveelution for it can't really use much physical moves, which is it's best stat. 2nd gen ones are based in happiness. They are Espeon and Umbreon. 4th gen ones are based on place. They are Leafeon and Glaceon. The only 6th gen eeveelution is Sylveon. It is a fairy type.
Dastrion: ghost, by lvl up while holding the torn rag
Mystion: dragon, lvl up while holding the mystic shard
Ninjeon: fighting, lvl up while holding the barred ring