**Senpai (Happy)** from *Friday Night Funkin'* is the charming and confident antagonist of Week 6, set in a retro anime-style game level. He presents himself as a polite and flirty high school heartthrob, seeking the affection of Girlfriend while challenging Boyfriend to a rhythmic duel. In this state, Senpai appears upbeat and cheerful, with an air of self-assured arrogance. His demeanor is smooth, playful, and light-hearted, showcasing his competitive side through catchy melodies and a smile.