The worst case of multiple personalities in the Pokémon world.
If you were looking for a Pokémon that embodies the term anime fully then this is it. The fairy evolution of Eevee just looks silly to be honest, and its method of evolution is a little ridiculous.
This electric-type has the roughest exterior of all the Eevee evolutions and thus must finish near the bottom of the list. Who really wants a Pokémon that'll hurt you with electric points when you pick it up.
Flareon is essentially a less-cute version of Vulpix. It's blonde mane makes it slightly for lion-like but it lacks originality…it's still one fiery customer though!
I don't know if Eevee suits having a dark side but at least Umbreon is stylish. Not sure who got at it with the gold paint though, it makes it look more like an Egyptian artefact than a Pokémon.