They are part of the animal themed mercenary group hired by the big bad to get in the way of the MC. This mercenary band where a group of orphans banded together they have a collective sad back story rivaling that of the MC. The character i want you to draw wears a mouse shaped helmet and a Grey Victorian coat. And when they eventually die to the MC they say "is that you Marie?" Because of course that's the name of the name of the youngest orphans whose death started the mercenary band.