Pokemon Legends: Z-A takes place in the Kalos region, specifically in Lumiose City. One of the exciting elements of returning to Gen 6 is Mega Evolution. This gimmick was the launching point for special evolution and attack mechanics in future regions, and stands as one of the most popular over a decade later.

Another notable Mega Evolution with drastically different shiny colors from its base form is Garchomp, which goes from a barely noticeable shiny color palette to a bright pink and purple color, showing there is precedent for unpopular shinies to get a glow-up when they Mega Evolve.

On the official game website, Game Freak tries to frame Mega Dragonite as a compassionate critter who loves kindness. It can sense when someone is in danger, and is compelled to save them from danger.