The Late Bronze Age (from 1700 to 1200 BCE) Hittite and Hurrian Aplu was a god of plague, invoked during plague years. Here we have an apotropaic situation, where a god originally bringing the plague was invoked to end it. Aplu, meaning the son of, was a title given to the god Nergal, who was linked to the Babylonian god of the sun Shamash. Homer interprets Apollo as a terrible god (δεινὸς θεός) who brings death and disease with his arrows, but who can also heal, possessing a magic art that separates him from the other Greek gods. In Iliad, his priest prays to <answer>Apollo Smintheus</answer>, the mouse god who retains an older agricultural function as the protector from field rats. All these functions, including the function of the healer-god Paean, who seems to have Mycenean origin, are fused in the cult of Apollo.
Who is the mouse God?
Apollo Smintheus