Midge
From Treasure Adventure Game Wiki
Midge is a mouse, and is one of the spirits found on Poveglia Island.
When talked to, Midge will give the player the Mouse Hat.
Dialogue
When talked to for the first time
Midge: In honor of your having saved my soul I would like to give you this special Mouse Hat.
If the player has the Mouse Hat
Midge: When you wear that Mouse Hat you'll look just like I did when I was alive.