Sivakarthikeyan

Kunjithapatham/Harish

Priya Anand

Geetha

Nandita Swetha

Valli

Jayaprakash

Coach

Ravi Prakash

Raja Singh

Sathish

Peter

Surekha Vani

Kunjithapatham's Mother

Suza Kumar

Kunjithapatham's first love interest

Manobala

Astrologer Gunashekar Raja

Madhan Bob

Office Manager

Dhanush

Special Appearance in "Local Boys" Song

Nayanthara

(Special appearance)

அனிருத் ரவிச்சந்திரன்

Bar Waiter (Cameo Appearance)

RJ Balaji

Himself (Host Of Chennai Marathon)

Dinesh Ravi

Dinakaran

R. S. Durai Senthilkumar