Son of Sundaram and a cab driver in Chennai. After a failed marriage proposal to Viji, he returns to Chennai and accidentally acquires a bag containing his murdered father's remains. He tracks down the bag, confronts and defeats Sekar for revenge, and ultimately helps dispose of the crime evidence.
Kathir is the son of Sundaram, driving the central revenge motive.
Kathir pursues a romantic relationship with Viji through a formal marriage proposal.
Viji's father holds a strong prejudice against Kathir's family, leading to repeated verbal conflicts.
Kathir seeks direct vengeance against Sekar for murdering his father.
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