Meso  

The identity of Meso is uncertain because although it's commonly known as the mascot of the team, its zipper has opened multiple times and different creatures have emerged from within. Typically, when threatened, Meso becomes extremely violent and possesses sharp fangs and claws. It was discovered on either a spaceship or in a coffee shop called "Dosukoi Kissa Je Taime," depending on the opinions of the club members.