Star Cast :
Prithviraj, Sheela, Ambika, Suraaj Venjaramoodu, Kalabhavan Mani, Jagathy Sreekumar, Captain Raju, Biju Menon, Lalu Alex, Sudheesh, Sai Kumar, Suresh Krishna
Source 2
Thanthonni synopsys
Thanthonni movie is all about Kochukunju (Prithviraj) who is the youngest member of the wealthy Vadakkan Veettil family, happens to be a brat who is living life on his own terms. It is a huge household where he lives with his mother, three uncles and their families. All in the family are well-placed and rich, except for Kochukunju, who has been a troublemaker right from his childhood.