Roj Sereeroj Jayaphorn or Roji Sensei, is a director, actor, TikToker and YouTuber born in Bangkok, Thailand. His mother was born and raised in Japan to German parents and his father was fromer Thai Deputy Minister of Commerce and Samut Songkhram assemblyman Phairot Jayaphorn. He attended Bangkok Christian College and NIST International School before going on to major in international studies at International Christian University and mass communications at Tokyo Visual Arts technical college in Tokyo, Japan. He speaks Japanese, Thai and English.

In 2023, Roj made his television acting debut in the series "Cherry Magic"