[1] Kalaiyarasan, a graduate in Computer Applications from SRM Institute of Science and Technology, initially began work as an actor with Parthy Bhaskar's Arjunan Kadhali in 2010, but the film remains unreleased.
[4] Set in the backdrop of North Chennai, Kalaiyarasan auditioned and cleared three screen tests before being handed the role and worked closely with the film's lead actor Karthi in order to shown their on-screen camaraderie.
[5] A critic from Behindwoods.com noted Kalaiyarasan "steals the show and this has to be his lifetime role", adding that "the youngster has grabbed the opportunity with both hands and we have to laud director Ranjith for giving this dynamic performer good scope to showcase his wares".
[8] He first portrayed leading roles in Darling 2 (2016) and Raja Manthiri (2016), but his first high-profile project as the protagonist was C. V. Kumar's production Adhe Kangal (2017).
He was cast in Tamil drama film Mari Selvaraj's Vaazhai (2024) and received positive reviews and strong box office performance.