name: Dullaheon
way for evolution: unknown

research Dex entry:
at first it was believed that this was a new species of ghost type pokemon, time later it was discovered that it was an unknown evolution of the pokemon called Eevee

while this pokemon appears to have its head detached from its body, on closer inspection there is actually a tightly coiled, invisible tether binding the two together. This allows the head to travel great distances while still being able to make its way back to the body when needed. It allows still perceives anything happening to the body. However, further travel requires that the body be hidden, for it will remain motionless until the head comes back into a closer range. If the head or body are put under threat or duress, the pokemon is able to forcefully contract the tether, snapping the two pieces back together and taking them out of harm's way.
( thanks for help on this entry  dinonickp)
its sinister song sounds like a lament confuses and terrifies those who listen to it,

the information is hard to come by, as it is nearly impossible to capture, and those who have tried have been plunged into madness. some researchers are offering a juicy reward for a specimen of this pokemon