Kagebōshi

Kagebōshi (影法师, Kagebōshi), is one of the 108 spectra Army Hades , god of Hell , appeared in the " Lost Canvas "but its formal introduction is in The Lost Canvas Chapter Virgo, Kagebōshi roams the underworld in search of souls who somehow managed to maintain consciousness after death, and recruit them to the Underworld army serving Hades.

Past
Kagebōshi has a brief confrontation with Asmita, when the latter saves a person they were tortured by Skeletons defeating latter Kagebōshi attack Asmita but nothing works and ends up running the same fate as their subordinates.

Lost Canvas
Kagebōshi is one of the specter, which can be seen in the collection of specter called by Hades who is none other than Alone