Guess I could write another one after Alucard. I'll try to do Eevee. Don't know if it's good so let me know
Eevee
"Its genetic code is irregular. It may mutate if it is exposed to radiation from element Stones." -- Pokédex Entry (Red Version)
==Bio==
With Evolution being a unique feature in the Pokémon World, Eevee may be one of the most interesting creatures to have roamed its lands. Evolution is a process in which a Pokémon changes into a different species of Pokémon, usually getting stronger in the process. While more conventional Pokémon only get one or two Evolutions, Eevee can transform into eight different creatures. Moreover, all of Eevee's evolutions require different preconditions, leading into the most exotic Evolution tree the Pokémon World has ever seen. Elemental stones, location, and time of the day are but a few of the conditions a Pokémon trainer has to take into account to make Eevee evolve.
From those Evolutions comes Eevee's greatest strenght, as it is a relatively weak Pokémon in its basic form. Being of Normal type, Eevee only gets one weakness, but doesn't show any potential advantage, nor exceptional stats. A Pokémon trainer who gets to train an Eevee may prefer to raise its Evolution(s) instead, as they all possess different abilities and types. One should pay attention into which form Eevee may evolve as it is said that only a few Eevees are still alive, and Pokémon trainers may not encounter such a creature in the wild. To its trainer comes down the choice to make Eevee the trump card of a powerful Pokémon team.
==References==
Official Pokédex Website (Just saw the Mascott page has references, but I thought a more "official" one would be better )
Bulbapedia Article: Eevee