For so many reasons, Bobby Singer calling anyone an "Idjit" has become a staple and joy of any Supernatural fan. Whether it be talking with the boys or the king of Hell himself, one can always expect to hear an Idjit fly out of Bobby's sassy witty mouth.

The Entity\n\n The Cosmic Entity might be the most powerful Supernatural monster in history, but there is not enough known about it to rank it very high on this list. The Entity predated God, the Darkness, and Death. However, the full power of the Entity is unknown, as we still don't know what its specific powers are yet.

They do disturb the Earth's ionosphere, however, which in turn disturbs radio communications. Along with energetic ultraviolet radiation, they heat the Earth's outer atmosphere, causing it to expand.

Solar Flares Can Cause Radio Blackouts on Earth\n\n When a strong enough flare occurs, charged electrons in the upper atmosphere can temporarily disrupt radio waves on the side of Earth that is facing the Sun, either degrading or completely absorbing them.