Character Name : Kunjithapatham/Harish

Original Name : Sivakarthikeyan

Gender : Male

Character Name : Geetha

Original Name : Priya Anand

Gender : Female

Character Name : Valli

Original Name : Nandita Swetha

Gender : Female

Character Name : Coach

Original Name : Jayaprakash

Gender : Male

Character Name : Raja Singh

Original Name : Ravi Prakash

Gender : Male

Character Name : Peter

Original Name : Sathish

Gender : Male

Character Name : Kunjithapatham's Mother

Original Name : Surekha Vani

Gender : Female

Character Name : Kunjithapatham's first love interest

Original Name : Suza Kumar

Gender : Male

Character Name : Astrologer Gunashekar Raja

Original Name : Manobala

Gender : Male

Character Name : Office Manager

Original Name : Madhan Bob

Gender : Male

Character Name : Special Appearance in "Local Boys" Song

Original Name : Dhanush

Gender : Male

Character Name : (Special appearance)

Original Name : Nayanthara

Gender : Female

Character Name : Bar Waiter (Cameo Appearance)

Original Name : அனிருத் ரவிச்சந்திரன்

Gender : Male

Character Name : Himself (Host Of Chennai Marathon)

Original Name : Balaji Patturaj

Gender : Male

Character Name : Dinakaran

Original Name : Dinesh Ravi

Gender : Male