Main •
Nikitha Rajesh as Samantha (Sam) • A naughty, kind-hearted American woman, who tries to reunite her mother (Kalyani)with the "Suryavamsam" family. She entered under the name Samanya in Suryavamsam and everyone thought that she was Jayanthi's friend's daughter, but she was Chris and Kalyani's daughter; Annammal and Selva Ganapathy's grand daughter; Padmavathi, Chandru and Leelavathi's cousin; and, Surya's cousin and love interest. •
Aashish Chakravarthi as Surya • Samantha calls him "Black Coffee". He is a rude, but calm and kind-hearted person who is Jayanthi and Shankaran's son; Annammal and Selva Ganapathy's first grand son; Leelavathi's elder brother; Padmavathi and Chandru's cousin brother; and, Samantha's maternal cousin and love interest. •
Poornima Bhagyaraj as Annapoorani (Annammal) • The present head of the "Suryavamsam" family who makes all the decisions in the family. She hates her own daughter Kalyani, as she married a foreigner Chris despite her wishes. She was the wife of Selva Ganapathy; mother of Shanmugam, Shankaran and Kalyani; mother-in-law of Raji and Jayanthi; and the grandmother of Surya, Samantha, Padmavathi, Chandru and Leelavathi.
Recurring • Nithya Raj as Samanya • The real Samanya. She wants to marry Surya and loathes Samantha. •
Rajesh as Selva Ganapathy (deceased) • Suryavamsam's former head. He was Annammal's husband; Shanmugam, Shankaran and Kalyani's father; Raji and Jayanthi's father-in-law; Narayanan's elder brother; and the grandfather of Surya, Samantha, Padmavathi, Chandru and Leelavathi. • Sandhana (Episode 1–285) / Akila (Episode 286–292) as Kalyani • An innocent lady, who marries a foreigner, Chris Parker, despite her family's concerns and settles in the United States of America. She has become ill and wants to reunite with her family. She was Annammal and Selva Ganapathy's daughter; Shanmugam and Shankaran's younger sister; and Chris's wife and Samantha's mother. • Rafi Ullah as Chris Parker • A foreigner, Samantha's father; Kalyani's husband; and Annammal and Selva Ganapathy's son-in-law. •
Anitha Venkat as Raji • A traditional woman who is Annammal and Selva Ganapathy's daughter-in-law; Shanmugam's wife; Jayanthi's co-sister; Samantha's aunt; and Padmavathi and Chandru's mother. She was also Annammal's brother's daughter. •
Caroline Hiltrud as Jayanthi • A trendy woman who is Annammal and Selva Ganapathy's daughter-in-law; Shankaran's wife; Raji's co-sister, Samantha's aunt; and Surya and Leelavathi's mother. • Birla Bose (Episode 1–82) / Gokul (Episode 83–208) / Krishna Kumar (Episode 209–292) as Shanmugam • Annammal and Selva Ganapathy's first son; Raji's husband; Shankaran and Kalyani's elder brother; Samantha's uncle; and Padmavathi and Chandru's father. • Gajesh as Shankaran • Annammal and Selva Ganapathy's son; Jayanthi's husband; Shanmugam and Kalyani's brother; Samantha's uncle; and Surya and Leelavathi's father. • Sindhu Sadhana as Padmavathi (Padma) • Annammal and Selva Ganapathy's granddaughter; Srinivasan's lover, then wife; Raji and Shanmugam's daughter; Surya and Padmavathi's cousin sister; Samantha's cousin; and Chandru's elder sister. • Madhan as Chandru • Annammal and Selva Ganapathy's grandson; Raji and Shanmugam's son; Surya and Leelavathi's cousin brother; Samantha's cousin; and Padmavathi's younger brother. • Dhachayani as Leelavathi • Annammal and Selva Ganapathy's granddaughter; Jayanthi and Shankaran's daughter; Padmavathi and Chandru's cousin sister; Samantha's cousin; and Surya's younger sister. • Mithun Raj as Abhishek • The fake lover of Leelavathi. • Kiruba as Samanya's mother • Jayanthi's friend. • Ramachandran Mahalingam as Narayanan • The antagonist, who is in favor of Shanmugam, Raji and Chandru to possess them. He was Selva Ganapathy's younger brother; Shanmugam, Shankaran and Kalyani's paternal uncle; and the great-uncle of Surya, Samantha, Padmavathi, Chandru and Leelavathi. • Jayaraman Mohan as Srinivasan • A proposed bridegroom for Padmavathi, who loves her at first sight. However, his parents oppose this marriage. •
Kavithalaya Krishnan as Krishna • Srinivsan's father, who went to the Suryavamsam house to seek Padmavathi as his son Srinivasan's bride. When he learns about the Suryavamsam family's renunciation of Kalyani, he refuses Padmavathi and cancels the marriage proposal. In the end, he accepts Padma and Srinivas’ marriage.
Cameos • Banu Mathy as Kasthuri • Lavanya Manickam as Priya • Paandi as Sambandham • Arunkumar Padmanabha • Manikandaraj Major • "
Metti Oli" Shanthi • Premalatha as Prema • Sangeetha Balan as Kamakshi ==Production==