I was just reading trough the demon codex again today, and noticed the passage talking about the emperor. It says none knows if he is truly alive or not, so my question is: Is the emperor truly alive or has he already ascended to become a warp power, and he is just being fed souls to fuel him just like the Chaos gods, and to avoid the demons of the void grabbing the souls for the emperor, his presence is being fed trough the throne.