Skippy's revenge - Name a wraith

[the guy who be short]

who's the scariest nazgul on arda?
feared by manwe and varda
he is feared by all alike
with his black sword and deadly pike
all serve him in fear, even thu
and morgoth, tulkas, me and you
live in fear of his wrath
he will deal out instant death
his evil had brought him renown and fame
its Him, who i dare not name

finish the song with a funny name please