Then please read KMC VS rules
http://www.killermovies.com/forums/f77/t461496.html
Rules/Standard Fight Settings
In most cases, the poster who originally set up the versus fight determines the conditions of the fight itself (ex. If a character like Superman is in a thread, it'll be assumed that it's the current version unless mentioned otherwise by the thread starter, the same goes with Thanos without the IG, and so on). However, in the cases where the original poster did not set down any constraints or conditions for the fight, then the match would default to the standard rules below.