Karthik and R. V. Udayakumar have appeared together in 4 films between 1988 and 1995. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 1988 | Urimai Geetham | |
| 1990 | Kizhakku Vasal | |
| 1993 | Ponnumani | |
| 1995 | Nandhavana Theru |
Karthik also often with: Senthil (30), Goundamani (20), Radha Ravi (19), Manivannan (17), Vijayakumar (17)
R. V. Udayakumar also often with: Vadivelu (7), Manorama (6), Vijayakumar (6), Goundamani (5), Janagaraj (5)