Senpai FNF

Senpai is a young, light-skinned man with a constant blush, strawberry blonde hair, and wide blue eyes. He wears a partially tucked-in periwinkle blue button-up shirt, a loose pink tie, grayish-purple jeans held up by a black belt with a silver buckle, and grayish-purple shoes. He carries a brown backpack in his right hand over his right shoulder and holds a pink microphone loosely in his left with his thumb and index finger. His head sparkles whenever he is not singing. Fitting his dating sim origins, he stands and stares forward in the player's direction instead of towards his opponent.

Senpai is normally a very polite and calm individual who typically speaks in a formal way, especially towards people he likes. However, he has a short temper and is a sore loser, becoming rude and speaking more vulgarly after losing. This sudden behavior change is explained as a result of Senpai's programming being unable to handle a loss since he was only ever meant to be perfect.

Senpai has been described as a "generic pretty boy asshole" and is somewhat based on how people who are self-centered or toxic can be in real life.[2] He may also be insecure, as he would be the kind of person who strips when no one asks him to, and when he isn't told that he looks awesome, he starts crying.