He replaced Vikram Prabhu in Sneha Britto's Sattam Oru Iruttarai after a successful audition and featured in the lead role opposite Bindu Madhavi and Piaa Bajpai.
The film, a remake of the yesteryear film of the same name, was released with little publicity and failed at the box office, with a critic noting "Thaman Kumar showed signs of confidence".
Thaman Kumar slips into the character of a village boy with utmost ease in Sethu Boomi (2015).
[6][7] Thaman Kumar is essaying the role of Chinrasu in the Tamil serial Vanathai Pola.
He delivers a fairly engaging performance in investigative thriller Oru Nodi (2024).