The interactions between the cast were praised by Richard Osborn from "IGN" for how comical they are in contrast to the series' dark plot. The Exorcists in general were praised for their strong personalities by Anne Lauenroth who cited Lenalee, Krory and Timothy because they stand out while facing enemies. Nevertheless, she was disappointed Miranda's constant nervous personality remained for many episodes. Yussif Osman from "Japanator" highly praised the cast's personalities finding them as some of the deepest characters seen in "shonen" manga citing both Lavi's backstory as well as the antagonists, the Noah Family. "IGN" praised the Earl saying he "is a menacing villain you'll love to hate" and the supporting cast shows enough potential to hold interest into future volumes. However, they compared the series' antagonist to three of "Batman"'s villains and said, "Batman should consider litigation, but even he'd have problems" facing the Earl". Chris Kirby from the "Fandom Post" noted that while some characters' motivations and objectives remained unknown, this add mystery appeal to them. Carlo Santos of Anime News Network was not as positive, believing that the story was kept from reaching its full potential because of "generic character designs". He also said that because the action scenes are thrown together without a change of pace or mood, the readers never get to know the secondary characters better.