Voyager had a character who killed a crewmember for zero reason and redeemed himself later when they put him to use for something.  That was a great little arc and better than this one.  It's true that Trek is about fun and action but a lot of bad guys had a bit more to them than this guy, especially if you're including the other series besides TOS.
	
		
			
		
		
	
				
			 
				 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		