GF and BF

Boyfriend is portrayed as a young, overzealous rapper with a love for music, donuts,[8] and his girlfriend. He loves to sing and show off his skills, resulting in his confident and cocky character. He is very determined and persistent about reaching his goals and won't let anyone get in the way of his success, even when threatened with death.

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.[9] As a result, he is afraid of virtually nothing.[10] This is demonstrated during both Monster and Winter Horrorland, where he does not appear to be afraid despite Monster's constant threats to him and Girlfriend. Boyfriend also seems to get bored of scary games, as he once almost fell asleep while playing one.[11] Despite this apparent lack of intelligence, he has street smarts, as he knows how to heal people.[12]

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.[5] In general, she either does not realize when she is in danger or is confident that she can get out of such situations,[6] which may also be due in part to the power she has. Her lack of intelligence can result in her getting into difficult situations, such as getting her hand stuck in peanut butter jugs and having to wait for hours for someone to help get it out.[7] However, she is still capable of making smart decisions and knows what to do when dealing with taxes[8] and facing death.

Appearance: 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. He holds a bluish-gray microphone in his right hand while keeping his left hand in his pocket. In his idle animation, he wears a confident grin and bops his head. He is drawn in a chibi style.

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, as shown in her singing animations, where she points with both hands in the direction of the arrow note being hit, although sometimes this detail is not added. She normally sits with her legs crossed on a large gray speaker, with two smaller gray speakers laying beside the large one. She is drawn in a chibi style.

Girlfriend is known to have multiple powerful abilities, but the details that can be inferred about them are limited at this time. In the cutscene for Stress, it is shown that Girlfriend can make her eyes gleam red and her skin turn a light shade of purple, acting as a visual indicator of her using (or preparing to use) her demon powers. It has also been directly stated that Girlfriend can use demon magic, including some form of shapeshifting, as she is able to give herself a penis.[15]

Girlfriend appears to have some form of invincibility or immortality, as she was apparently completely unharmed after falling from a plane, which her parents even knew would not be a problem for her.[16] Additionally, an official Girlfriend shirt design shows bat wings in her shadow and a heart tail attached to the letter d in the text with her name,[17] both features of succubi. It was stated that the design reveals one of her future abilities.[18]

Girlfriend might be able to conceal her powers in order to hide her demon nature. This is also a reason as to why Pump's eyes don't glow cyan whenever near her in Week 2.[19]

While the full extent of Boyfriend's abilities remains to be seen, multiple of his skills are evident. Boyfriend is an exceptionally talented musician, being able to win in rap battles and sing-offs against anyone he faces and performing perfectly at his best. He makes his own music as well.[23][16] It is also known that Boyfriend is a capable fighter,[24] which is demonstrated by numerous unused sprites. Boyfriend demonstrates the ability to use his microphone to attack opponents by swinging it around by its wire, as well as being able to quickly react and dodge either attacks or obstacles. He is shown to be able to successfully hit Daddy Dearest in a full unused attack animation, to the point of angering the father.[25]

It is also shown that he has strength in his arms since he can carry Girlfriend with just one hand (even when Girlfriend weighs almost half a ton).