Aster

Physical Features
Small and blue, the Aster is, at first glance, hardly distinguishable from your garden variety squirrel in most aspects. They have large cheeks and a horn on top of their head.

Behavior
Seems to have a nack for stealing & sneaking. Not aggressive, territorial, afraid of humans nor particularly intelligent, it appears to possess a rudimentary form of sly- and playfulness.

Field Notes
Though it seems to be unimpeded by its own weight, it assumes the mass of everything it is holding, making it quite tough to carry once it has eaten a lot.

Appearances
The Aster is first encountered in episode 5 of season 2. It harasses the players and steals their items before being caught and taken along, displaying an ability to store a staggering amount of mass and volume in its tiny body.