The Klu Klux Klan is a group of evil snowmen who only appeared in Bendee 4 and Xmas '04
List of appearances
In Bendee 4, the Klan were at a meeting, and a fake member of the group was there. The member was Bendee, who went to the meeting to destroy them, yet he was eventually captured.
When Edd, Tom, and Tord pass the Klu Klux Klan on Santa's sleigh, Tom shoots them with Santa's coal uzi.