Bubblegum, Elizabeth's Audino

History
In The Forbidden Pink Island, Elizaheth and co. landed on Pinkan Island. Elizabeth noticed the pink Audino and wanted to catch it, but it was kinapped by Team Rocket. Elizabeth caught it at the end of the episode and gave it the nickname Bubblegum, because of its bright pink colour.

In A Permanent Mega Evolution!, Audino was exposed to Alva's Mega Waves at full strength, which immediately caused it to Mega Evolve. Unfortunately, the Mega Evolution could not be reversed due to the strength of the waves and thus it permanently remains in a Mega Evolved state.

Personality and characteristics
Bubblegum is generally a kind and happy Pokémon, and especially loves dancing. As it is always Mega Evolved, it retains the power and abilities of being Mega Evolved, such as its Fairy-typing, and is much more powerful than a normal Audino.