To be honest, if this were a game, then the existence of Arbitrator Bloodspear would be a bug. How could he survive for so long if he was not a bug? How could he stand out among the Predators amid such cruel competition if he was not a bug?
Because the ferocity of Ronnie's attack surprised Bloodspear, the Arbitrator felt that the skull of this man was qualified for honour of being in his collection.
However, the traditional way of dealing with a war trophy skull involved many processes, and there were many taboos during those processes that were passed down through the generations. The most typical one was that the Predators were advised to "process" the skull immediately after decapitation. Legend said that the soul of the enemy could be sealed in the skull this way, so the collector could obtain part of the enemy's power.