Mizarian

The Mizarians were a humanoid species native to the planet Mizar II. Mizarians valued peaceful non-resistance and because of this, were conquered six times between the mid 21st century and the 2360s. 

The Klingon Empire refused any governmental relations with the Mizarian people because of their extreme pacifistic views. 

At least one Mizarian served aboard the USS Enterprise (NCC-1701-D) in 2371.