Board Thread:Questions and Answers Forum/@comment-24776964-20140916092737/@comment-184.94.227.30-20140918021744

They're basically super powered Minotaurs. Their specific purpose is to guard that area as it functions as the entrance to the Vault of Glass, the first raid for the game. When you actually chose to do the raid, there will be 3 of them guarding special areas around the entrance that you need to capture and hold from waves of enemies to open the vault.