In addition to the major Spirit Pantheon, there are many lesser spirits that roam the world of the Glory basin, Lesser spirits are not sapient and it's argued whether or not they're even sentient, however being able to tame one can allow you to use it's abilities to power something, like Sam's Gargoyle or even a clock to make it operate in a certain way or a gun to make it fire special effects. The possibilites vary depending on the strength of the spirit and it's considered good luck to be able to tame one for your house. This particular one is a mouse just minding its own business.