Leo

Madhusudhan Rao as Shanmugan's brother-in-law Sanjay Dutt as Antony Das Trisha Krishnan as Sathya Sandy as Shanmugam's Son Madonna Sebastian as Elisa Das Mansoor Ali Khan as Hridhayaraj D'Souza Mathew Thomas as Siddharth 'Siddhu' Gautham Vasudev Menon as Joshy Andrews Anurag Kashyap as Daniel (Uncredited) Mysskin as Shanmugan Vaiyapuri as Occult Priest Maya S. Krishnan as Escort Priya Anand as Deepa Andrews Denzil Smith as Judge Janany Kunaseelan as Shruthi Ramakrishnan as Gabbi Dinesh as Das and Co. Member Kamal Haasan as Vikram (Voice) Punya Elizabeth Bose as Sathya's Friend Babu Antony as Antony's henchman Vijay as Parthiban / Leo Das Santhi Mayadevi as Parthiban's Advocate Leela Samson as Public Prosecutor Chinmayi Sripaada as Sathya (Voice) Arjun Sarja as Harold Das George Mariyan as Napoleon Sachin Mani as Shruthi's Husband

Deeraj Vaidy Writer Asal Kolaar Playback Singer, Lyricist Lokesh Kanagaraj Director, Writer John Wagner Graphic Novel Vijay Playback Singer Rathna Kumar Writer Tamil Sakthivel Assistant Editor Anirudh Ravichander Original Music Composer, Playback Singer David Cronenberg Original Film Writer Gopi Prasannaa Publicist Eka Lakhani Costume Designer Dinesh Choreographer