https://www.youtube.com/watch?v=u0FKfK0H9dY
http://www.ign.com/videos/2015/02/27/bloodbornes-darkbeast-boss-gameplay-ign-first
http://blog.eu.playstation.com/2015/02/27/new-bloodborne-video-shows-darkbeast-boss-fight
Darkbeast
A malformed beast enveloped in blue lightning.
With a long body made of only bones, and a wrinkle-covered skull, people say this beast must be very old, very ancient.
Or perhaps, it is a descendent of the city of the plague of beasts.