Discordeon

Discordeon (Korean: 꼬꼬마 아코디언, kkokkoma akodion) is an Epic Pet that was released alongside its owner,, in the first half of the Tan-ta-da! Merry Winter Parade! update. This Pet creates Discord Jellies at given intervals, which have various effects such as restoring Energy.

Story
''A new and very eager member of Marshmallow Cookie's parade. Unfortunately, its performance skills can't catch up with its eagerness just yet. Bear with it.''

Trivia

 * Discordeon was strangely not teased with its owner, only being revealed once the update was out instead.
 * Discordeon is a pun on both the word discord, and accordion, as the Pet is an accordion that causes much musical dissonance with its inability to quite get things right yet.
 * Generally, in all other languages besides English, its name essentially translates to "Little Accordion" or something similar.