 She made her debut in the 2012 experimental film "Yakshi – Faithfully Yours", directed by Abhiram Suresh Unnithan, featuring all newcomers in the lead roles.The film saw Avanthika playing the titular character of a "snake ghost" named Nagayakshi, a snake who turns into a woman after coming to the planet.2013 she was part of the Malayalam comedy flick "Mr Bean- The Laugh Riot", after which she was seen in "Neelakasham Pachakadal Chuvanna Bhoomi".