Pokémon that can solo the Elite Four without any restoring items

pokemon-x-y

I was wondering if it is possible to beat the entire Elite Four in Pokemon X with a single Pokémon (with a specific moveset or strategy) without any health-restoring or PP-restoring items.
Ideally regardless of its nature or IVs. If PP Up is required for some moves or certain EVs that's ok.

Best Answer

These are the Elite Four trainers that you have to defeat:

  • Malva, Fire-type
  • Wikstrom, Steel-type
  • Drasna, Dragon-type
  • Siebold, Water-type
  • Diantha, mixed team

You need a Pokemon that can learn a Ground move for Steel and Fire types, an Electric/Grass move for Water type and Dragon/Ice move for Dragon type.
For the last slot you can choose a Fire move (taking advantage from STAB) or a Rock move to have more coverage.

One is Charizard, and he has access to 2 megaevolutions. I suggest the Y versione due to Drought ability (lets you use Solarbeam without the charging turn and can increase Fire damage).

This is the set for Mega-CharizardY:

  • Earthquake
  • Solarbeam
  • Dragon Claw / Dragonpulse (eggmove)
  • Flamethrower / Heat Wave
  • [Rock Slide / Ancient Power]

Of course you need a well trained Pokemon to do that, at least level 80 I suppose, because you need to oneshot most of them if you don't want to use healing items.