Vijay as Gandhi / Jeevan

Prashanth as Sunil Thiagarajan

Prabhu Deva as Kalyan Sundaram

Mohan as Rajiv Menon

Ajmal Ameer as Ajay Govindharaj

Jayaram as Nazeer

Sneha as Anusuya "Anu" Gandhi

Meenakshi Chaudhary as Srinidhi Sunil

Vaibhav as Sha

Laila as Dr. Radhika Sunil

Premji Amaran as Seenu

Yogi Babu as Diamond Babu

VTV Ganesh as Raghavan

Aravind Akash as Aravind

Ajay Raj as

Yugendran as Abdhul

Parvatii Nair as Parvatii

Y. G. Mahendran as RAW Officer

Trisha Krishnan as Self

Sivakarthikeyan as Self

Vijayakanth as The Scientist

Mahendra Singh Dhoni as Guest Appearance

Abyukta Manikandan as Jeevitha

Dileepan as Dhilip

Kaniha as

Subbu Panchu as Rajendran

Jason Sanjay as Sanjay

Aarash Shah as Kidnapper