Anyone who has played through R3ds Kingdom's EXODUS maps will certainly know who there is. It was originally a texture for the Wither Skeleton, but figures why not make a wearable version of it? It is compatible for both 1.8, and 1.7. 

If you haven't played the map, give it a try! http://www.minecraftforum.net/forums/mapping-and-modding/maps/2427488-exodus-season-2-an-interruption-in-space-voice