That one will be Satan. Satan is a fallen angel and the master of tricks and schemes. The Bible describes the Devil as a lion seeking whom he may devour. The Devil wants to keep everyone from the presence of God. He will stop at nothing to do that. If he is so powerful, then why am I saying that God will win? It is simple, God could snap his fingers and Satan would be no more. In the end, God will win, and the Devil knows that. Satan and his army of demons are fighting and fighting to keep men and women from the truth. Satan is going to go to the lake of fire and so will all his followers. Read the Bible and sign up for the Lord's army. It is just a matter of time. Who's side will you fight on?