Pancham evolves into Pangoro by having a Dark-type Pokémon in the Party once it reaches level 32.
You can evolve Eelektrik by using a thunderstone.
33
At level 42.
Mewtwo cannot evolve, but it can mega evolve temporarily in Pokemon X, Y, Alpha Sapphire, and Omega Ruby by letting it hold a Mewtwonite X or Mewtwonite Y.
Chimecho is unable to evolve as of Pokemon X and Y. Chimecho does evolve from a Pokemon called Chingling when it's at max happiness and during night time.
No, because Mega Evolution wasn't introduced until Pokemon X and Y.
In Pokémon X and Pokémon Y along with Pokémon Omega Ruby and Pokémon Alpha Sapphire Pancham will wind up evolving into Pangoro as soon as it reaches the level of Level 32 however you also need to have a Dark-type Pokémon such as Umbreon, Murkrow, Sneasel, Houndour, Houndoom, Honchkrow, Tyranitar, Poochyena or Mightyena in your party in order for Pancham to evolve into Pangoro.
Machop evolves into Machoke at level 28.
Ducklett evolves at level 35.
Espurr evolves into Meowstic starting at level 25.
Does Bergmite evolve
Mewtwo is the ultimate Psychic type legendary Pokemon. It was introduced in the first generation and does not evolve into any other Pokemon, although as of the sixth generation it can mega evolve into Mega Mewtwo X or Mega Mewtwo Y.