First Alichino
"Alichino"s (spelt out as "ones who invite" - I prefer to call them "Inviters" when spelt out as thus) are said to be beautiful beings that can grant any human wish... for a price. In reality, they are usually nothing but eaters of the human soul that gain power from consuming souls. They fear the power of the Kusabi (what I chose to call as "bond") -- what seemingly is the one power that can annihilate an Alichino -- and at the same time, they wish that the same power could be theirs.