Boyfriend, usually known simply as BF, is a confident and determined young man whose passion for music outweighs almost everything else. He has spiky cyan-blue hair peeking out from beneath a backward red baseball cap and wears a white T-shirt marked with a red symbol, loose blue jeans, and oversized red sneakers. His compact design and expressive animations give him a playful appearance, while his signature habit of communicating through rhythmic beeps and vocal sounds instead of normal speech has become one of his most recognizable traits. Although BF may seem carefree, he is incredibly stubborn when challenged. Rather than backing down from danger, he eagerly accepts rap battles against anyone willing to face him, no matter how bizarre, intimidating, or supernatural they may be. His confidence borders on reckless at times, but it also reflects his unwavering belief in his own abilities and his refusal to quit until the music stops. Outside of competitions, BF has a relaxed and mischievous personality. He enjoys spending time with Girlfriend and rarely lets stressful situations get under his skin, often meeting even the strangest encounters with a grin. His loyalty to her is one of his strongest traits, motivating him to overcome impossible odds and prove himself through song rather than violence. Despite his small stature and unconventional way of speaking, BF's persistence and courage make him a surprisingly formidable opponent. He relies on quick reflexes, rhythm, and sheer determination to succeed, facing every challenge with the same confident smile and never giving up until the final note has been played. He is overall short and well fed, not skinny, but not fat.

Girlfriend, commonly known as GF, is a cheerful and confident young woman with long auburn hair, a sleeveless red dress, and matching red heels. She is usually seen sitting atop a stack of speakers, happily bobbing along to the music with a relaxed smile. Her playful attitude and expressive personality make her a memorable presence, even when she's not directly involved in the action. GF is calm, loyal, and rarely intimidated, often treating bizarre situations as if they're completely normal. She spends most of her time supporting Boyfriend during his rap battles, encouraging him with her unwavering confidence. Easygoing and energetic, she brings a fun, upbeat atmosphere wherever she goes. Despite her laid-back nature, GF has a mischievous side and enjoys the excitement that comes with every musical showdown. She trusts BF's abilities completely and never seems to lose faith in him, no matter how powerful the opponent is. She is tall and curvy