Azusa caught Espurr prior to Meeting Cheren and Bianca during the reunion of Light Music Club concert. She is also Azusa's second Pokemon she has of her team, and evolved into Meowstic in Which Meowstic's Which?, so she could protect Azusa and Yui. She is really affectionate to Azusa, she is protective to its Trainer, however.
As an Espurr, she was timid in the past, which was shown in Meeting Cheren and Bianca, It was revealed that a DayCare Lady gave Azusa a Pokemon Egg and it later hatched into an Espurr in a flashback in Sewing With Mio!.
She evolved into Meowstic in Which Meowstic's Which? and Azusa didn't know who's Meowstic's was who, until Yui and Mitsuki came up with plan to figure out who's gender Azusa's Meowstic was, it was confirmed female by Mitsuki, and Yui confirmed Madoka's Meowstic was male, much to everyone's shock.
In "What's In a Nickname?", she was officially nicknamed Snowbelle by Azusa, and even nicknamed the other Pokemon she has owned.
Meowstic's known moves are: Psychic, Disarming Voice, Calm Mind and Attract, and her ability is Keen Eye.