Droid Fight Club

Droid Fight Club was a secret organization run by battle droids after they all became unemployed at the end of the Clone Wars. The rules of Droid Fight Club were simple:

Rule #1: A droid may not talk about Droid Fight Club or, though inaction, allow Droid Fight Club to be talked about.

Rule #2: A droid must accept any challenge made in Fight Club, as long as doing so does not violate Rule #1.

Rule #3: A droid must protect its own existence, as long as it does not interfere with Rules #1 and #2.