In which we try to patch temporary pokemon forms we liked into a fixed, permanent evolution or variation (or whatever you can come up with)! Give the permanent form a name, change his type if need be, and explain how we could fit him into a single master-game.

i.e.: I'd like to make Mega Charizard X a fix form. One way to do it is to make it the Kalos evolution of Charmeleon.
Mega Charizard X -> Kalosian Charmeleon evolution: Azurezard [Dragon/Fire]

My changes:
Mega Alakazam -> Kalosian Kadabra evolution: Salazakam [Psychic]
Mega Pinsir -> Kalosian evolution: Chinsir [Bug/Flying]
Mega Gyarados -> Kalosion Magikarp evolution: Levyados [Dark/Water]
Mega Amparos -> Kalosian Flaaffy evolution: Ampherion [Dragon/Electric]
Mega Heracross -> Kalosian evolution: Beacules [Fighting/Bug]
Mega Houndoom -> Kalosian evolution: Horndoom [Fire/Dark]
Mega Blaziken -> Kalosian Combusken evolution: Yaiziken [Fighting/Fire]
Mega Gardevoir -> Kalosian Kirlia (fem) evolution: Beauvoir [Fairy/Psychic] (Gardevoir - Psychic)
Mega Gallade -> Kalosian Kirlia (male) evolution: Earllient [Fighting/Psychic]
Mega Mawile -> Kalosian evolution: Wewile [Fairy/Steel]
Mega Medicham -> Kalosian evolution: Nircham [Psychic/Fighting]
Mega Manectric -> Kalosian evolution: Zipptric [Electric]
Mega Banette -> Kalosian evolution: Dollusion [Ghost/Dark]
Mega Absol -> Kalosian evolution: Lucifol [Dark]
Mega Lucario -> Kalosian evolution: Jacario [Steel/Fighting]
Mega Mewtwo X/Y -> Kalosian variations: X -> Mewth [Fighting/Psychic] Y-> Neow [Psychic]
Mega Slowbro -> Hoennian Slowpoke evolution: Slowder [Psychic/Steel]
Mega Steelix -> Hoennian evolution: Dialix [Steel/Ground]
Mega Sceptile -> Kalosian Grovyle evolution: Rocketile [Dragon/Grass]
Mega Swampert -> Kalosian Marshtomp evolution: Swampion [Fighting/Water]