Old Satan Faction[]
Katerea Leviathan[]
Creuserey appeared to have feelings for Katerea, wanting to fight Azazel in order to avenge her death.
Four Great Satans[]
Sirzechs Lucifer[]
Creuserey despised Sirzechs, believing that he and the other three current Satans stole their right as the "True Rulers" of the Underworld. He also strongly detested Sirzechs for thwarting his ambition for world domination due to Sirzechs' contrasting beliefs in pacifism. In their final confrontation Sirzechs easily overpowered and killed Creuserey.
Fallen Angels[]
Azazel[]
Creuserey hated Azazel for killing Katerea and wanted to get revenge by killing him.