A pokémon that trained hard his whole life.
Get a bond with a trainer for first time.
Trains harder with his trainer's love and strength.
Power up (that still we dont know exactly how works to justify his logic. We need wait SM info).
Looks wonderful, but his trainer ruins it. He is weak.
Trainer trains harder with him, as he had never done.
Now looks wonderful, but his trainer ruins it. Overconfidence.
Trainer has a mental crisis, is afraid losing his friend.
They work together once again and achieve a feat.
They reaffirm their determination and bond. They will continue training to become stronger.
Their bond, strenght and persistence carried them to the top.
>>27339644Actually Mega-evolution is relatively common in anime, compared with games.
"Only":
Mega-Lucario (Corni)
Mega-Lucario (you)
Mega-Absol (rival)
Mega-Gardevoir (Champion)
Mega-Gyarados (villain)
Mega-Swampert/Blaziken/Sceptile (rival)
Mega-Gallade (rival)
Mega-Metagross (Champion)
Mega-Camerupt/Mega-Sharpedo (villain)
Mega-Salamence (Lorekeeper)
Mega-Sceptile/Blaziken/Swampert, Mega-Lati@s and Mega-Rayquaza (you)
+ Hoenn Elite 4 too, but just in postgame