Jana Nayagan marks the first collaboration between Vijay and filmmaker H. Vinoth, known for his intense and grounded storytelling. The first glimpse promo, titled The First Roar, features Vijay in a cop uniform, with a striking voiceover— “En nenjil kudi irukum”—hinting at his political connection, which has resonated well with fans. Anirudh's background score further elevates the impact.

Backed by KVN Productions, the film boasts a powerful ensemble cast including Pooja Hegde, Bobby Deol, Gautham Vasudev Menon, Prakash Raj, Priyamani, Shruti Haasan, Mamitha Baiju, Varalaxmi Sarathkumar, and Revathi.