Archangel Azazel
Fallen Angel
This is actually the first Eeevee evolved form that doesn't have its type obviously displayed. With the rest of them you could easily look at them and point out how it looks, and they've never hidden the typing of one either since it was painfully obvious.
Actually I think I remember that Espeon was thought of as Light typing before..? <.> >_>
Now nawp but its the "Sun" Pokemon <_> and its Psychic >.>