A Little Batty

This old mosolium and its inhabitant Mr. Hallow have been in a peaceful rest for many centuries. But lately it has been getting very loud and unruly. Making it impossible for the dead Mr. Hallow to rest and to be honest it's making him a little batty. He has now possesses the mosolium and is showing how batty he really is. Don't get to close or he might just bite you.