Originally nameless in the video game, he is given the name "Seta Souji" in the manga adaptation and "Narukami Yuu" in the anime adaptation.
He is nicknamed Banchou for a number of reasons:
- His starting Persona, Izanagi, wears a banchou-style outfit (gakuran and tall geta)
- In the Miss? Contest, he dresses as a sukeban
- Compared to the protagonist of Persona 3, Arisato Minato, he has a number of much more manly conversation/action choices
This nickname gained official acknowledgement in the PV for Persona 4: The Ultimate in Mayonaka Arena, in which he is called the "steel siscon banchou" (鋼のシスコン番長).