'Gory', 'grisly', 'grim' and 'scary' do all roughly mean brutal.
'Grimm' as the name of the brothers is a red herring connection, with Gorey and Scarry also names of children's authors.
An autopsy can be gory, grisly and depending on circumstances, grim. It is not brutal.
Scary is about a state of mind.
so you have appearance, appearance, appearance, and state-of-mind being considered similar to an action descriptor.