Boyfriend is a young man with light skin and spiky cyan hair. He wears a backward pink-red cap with a blue brim, a magenta-white short-sleeved T-shirt with a red prohibition sign, baggy blue pants and pink-red sneakers with magenta-white shoelaces and soles, as well as small holes on the quarters and the letters "NG" engraved on the outsoles. Boyfriend is implied to be clingy, as he is never seen without Girlfriend by his side. He is also very unintelligent, either not realizing when he is in danger or being overconfident about his ability to get out of it.

Girlfriend is a young woman with light skin and long, thick auburn hair. Two short locks of hair stick out of her head, one being much smaller than the other, and the shine on her hair resembles a skull. She wears a sleeveless red minidress and matching high heels. Her fingernails are painted red Girlfriend is portrayed as a young, mysterious woman. With a love for cherry soda and her boyfriend, she seems to be calm and collected in almost any situation, even in the face of death. Being a demon, she seemingly possesses a great deal of power, but she mostly chooses to hide it. She is always seen with Boyfriend at her side, courtesy of true love, as she genuinely loves him very much. Like Boyfriend, Girlfriend lacks intelligence to the point of being unafraid of almost anything.