After losing the final loop the player's proceeded to correctly identify all the character's that had roles (Including the 'Key Person') and then guessed randomly at who was the Brain and the Cultist, as their abilities were never used because they weren't actually in the game. Seeing as all the real character roles were named first, who technically won?
The characters that "don't have roles" have the role "person" which is what they should have guessed. If they knew there was no Brain or Cultist they shouldn't have guessed them. So, technically they lost because they didn't know the rules.