Arjun Sasi is an Indian rapper, singer, lyricist, and actor known for his work in Malayalam cinema. He first gained recognition in 2004 as a member of the Tamil pop band S5, launched by SS Music alongside Benny Dayal, Anaitha Nair, Suvi Suresh etc. Sasi later contributed to the 2007 album Malayalee with Vineeth Srinivasan, Shaan Rahman, and Jakes Bejoy, writing and performing the English-lyric track Friends Are Forever. He has lent his vocals and rap to works by notable music directors such as Santhosh Narayanan, Pravin Mani, Yuvan Shankar Raja, Vidyasagar, Jassie Gift, Rahul Raj, Suresh Peters, Deepak Dev, and Alphons Joseph. As an actor, he has played a lead role in the film Out of Syllabus directed by Jayaraj.