Nothing would happen he can't die!
Neither - the vampire is already dead and so is essentially safe from the Reaper, but likewise, the Reaper is the Lord of Death and cannot be killed, so the vampire would be unable to defeat him.
They would be killed by other means
They would be KILLED
you are going to be killed too...
you'd get arrested
Mankind would cease to be, then.
You would go to prison.
some would say he did but most of of them would say he killed himself with a gun
we would not get killed unless you recycle mebye
The wolf will die...
he would kill himself
You would create a paradox of before and after.