Scrunchgrim
Informal. A person of bad personality is often referred to as a Scrunchgrim. The term is derived from an Anglo Saxon phrase and means literally to scrunch ones heart up grimly.
You Scrunchgrim, sir! You ne'er do well!
You don't have to be such a Scrunchgrim about it, Sally.
You don't have to be such a Scrunchgrim about it, Sally.