Treasure Trivia: Quiz #6

Treasure Trivia:

The Cinema Cafe has a chat room on Facebook that readers are welcome to join here. On Mondays, we have a movie trivia game called "Match-up Mondays" where the object is to name the common denominator between all of the captures provided and also identify each of the films pictured. 

My most recent post seems to have stumped even our most knowledgeable and regular members as to the common denominator, so I thought I would post it here and offer a prize to the first person who can identify (in the comments section below) what the following film characters share in common. 

There are 6 characters, all of whom have been identified correctly by various chat room members and confirmed on the "Match-up Monday" post. One may use whatever resources are available to answer correctly and guess as often as possible. The prize selected is one I believe most film buffs don't already have but should: A new and sealed Region A Blu-Ray of Hidden Gem #17: The Matrimony a.k.a. Xin zhong you gui (2007, China)  which will be internationally airmailed to the winner. 

Here are the 6 previously identified film characters (Good luck!):

1.

2.

3.

4.

5.

6.