Boogiepop Phantom (ブギーポップ・ファントム, Bugīpoppu Fantomu?) is an entity born in the electromagnetic field the moment Echoes' light appeared in the sky. Amongst the memories scattered by the light it could only find Boogiepop's attire, but not his face, and so chose the appearance of Minako Yurihara at random. He claims to be Boogiepop, but later renames himself Boogiepop Phantom out of respect for the original. He too confronts the enemies of the world, but has his own agenda in mind.
Kazuko Suema (末間和子, Suema Kazuko?) was to be Dr. Kisugi's next victim, until Boogiepop and the Fire Witch put a stop to the killings. With the knowledge that her life had been in danger, she developed a fascination for criminal and abnormal psychology, and a desire to not let anything occur around her without her knowing. She desperately seeks the truth behind the unexplained happenings in the city, and meddles with forces best left untouched. Kazuko longs to be closer to Nagi Kirima, who seems to know the answers she seeks.
Voiced by: Kyo Nagasawa (Japanese), Anne Benkovitz (English)
Manaka Kisaragi (如月真名花, Kisaragi Manaka?) is a highly-evolved being with the ability to draw memories from her surroundings in the form of butterflies of light. She was given the Towa drug by Dr Kisugi as an unborn child, which caused her abilities to develop. The "devil's child", as she was known, was killed by her dying grandmother. Echoes' light brought Manaka back to life and caused accelerated aging. Her grandmother died soon after. Her insight into people's memories makes her aware of Echoes, whom she emulates.
Voiced by: Sanae Kobayashi (Japanese), Rachael Lillis (English)
Manticore Phantom (マンティコア・ファントム, Manteikoa Fantomu?) is another product of Echoes' light, one who possesses the remnants of Manticore's consciousness and the visage of Masami Saotome. No longer the threat it once was, it now preys only on distressed, easy targets. Manticore Phantom seeks a way to sustain himself permanently when he learns that he will be gone once the electromagnetic field returns to its original state.
Voiced by: Jun Fukuyama (Japanese), Crispin Freeman (English)
Nagi Kirima (霧間凪, Kirima Nagi?), the Fire Witch, has made few friends because she knows she is too dangerous for 'normal' people to associate with. She has a Messiah complex, and seeks to save the world from whatever may threaten it. Her father's death and her brief friendship with Shinpei Kuroda motivated Nagi to become a defender of justice. She is very strong both physically and mentally, and uses her abilities and inheritance in her self-appointed mission.
Voiced by: Yuu Asakawa (Japanese), Rachael Lillis (English)
Poom Poom (プームプーム, Pūmu Pūmu?) is a phantom created by Manaka Kisaragi. Born from the memories of Mamoru Oikawa playing the Pied Piper in a school play, it evolved to take on qualities of Akane Kojima's fictional character of Poom Poom. By handing out red balloons to people who regret the direction their lives have taken, he takes a manifestation of their childhood hopes and dreams with him to Paisley Park, leaving only an empty shell behind.
Voiced by: Rakuto Tochihara (Japanese), Jessica Calvello (English)
Touka Miyashita (宮下藤花, Miyashita Tōka?) possesses the appearance of an ordinary school girl at Shinyo Academy, but unknowingly suffers from multiple personality disorder. At the age of twelve, she witnessed the death of Shinpei Kuroda, and the resulting mental trauma gave birth to the alternate personality of Boogiepop. Whenever enemies of the world appear, Boogiepop takes over to do battle. Touka is not aware this is happening, as she deletes her memories of being Boogiepop, and carries all of Boogiepop's effects in a Spalding sports bag without realizing it.
Voiced by: Kaori Shimizu (Japanese), Debora Rabbai (English)