Bison: Kaalamaadan starring Dhruv Vikram in the lead is a sports biopic drama based on the life of former Tamil Nadu Kabaddi player Manathi P Ganesan. The movie written and directed by Mari Selvaraj, and produced by Pa Ranjith's Neelam Productions, released in theaters on October 17, 2025 for Diwali this year. 

After 5 days of theatrical run, Bison director Mari Selvaraj has now shared that Superstar Rajinikanth with whom Pa Ranjith has done two movies Kabali (2016), and Kaala (2018), called Mari Selvaraj and Pa Ranjith to praise the film. 

An X post made in Tamil from Mari Selvaraj's official handle on October 22, 2025 reads,

"'Super Mari Super. I watched Bison. Your hard-work and your personality amazes me film after film. Congratulations Mari.' - Superstar

 

Just like after watching 'Pariyerum Perumal', 'Karnan', 'Maamannan', 'Vaazhai', you called and praised me, after watching my fifth film 'Bison (Kaalamadhan)'. On behalf of myself and my entire film crew, I would like to express my gratitude to the Superstar who called me and Ranjith brother over the phone and sincerely congratulated."

'சூப்பர் மாரி சூப்பர் பைசன் பார்த்தேன் படத்துக்கு படம் உங்கள் உழைப்பும் உங்கள் ஆளுமையும் என்னை ஆச்சரியபடுத்துகிறது மாரி வாழ்த்துக்கள் ‘
-சூப்பர் ஸ்டார்

பரியேறும் பெருமாள், கர்ணன், மாமன்னன், வாழை பார்த்துவிட்டு என்னை அழைத்து பாராட்டியது போலவே எனது ஐந்தாவது படமான பைசன்… pic.twitter.com/QrNiTitvgB

— Mari Selvaraj (@mari_selvaraj) October 22, 2025

Bison Kaalamaadan co-produced by Applause Entertainment is set in 1990s rural Tamil Nadu, and follows the story of a gifted kabaddi player from an oppressed caste, who defies violent feuds, social hierarchies, and his father’s fears to chase his dream of representing India—transforming from victim to symbol of defiance known as Bison.

Bison also stars Anupama Parameswaran, Rajisha Vijayan, Pasupathy among others, and has Nivas K Prasanna for music, Ezhil Arasu K. for cinematography, and Sakthi Thiru for edits.