Roy also played a double role in Season 2 of Naagin.
In 2009, Roy participated in Pati Patni Aur Woh along with Gaurav Chopra then after in 2010, she was seen playing the role of Roop in Do Saheliyaan Mouni made fame after playing the role as Sati in Life OK's mythological series Devon Ke Dev... During that time she played the lead as Meera opposite Aditya Redij in Life OK's Junoon – Aisi Nafrat Toh Kaisa Ishq in 2013.
In 2014, Mouni participated in the dance reality show on Colors Jhalak Dikhhla Jaa in its seventh season along with Punit Pathak.
Her grandfather, Shekhar Chandra Roy was a well-known Jatra theatre artist.
While her mother Mukti is a theatre artist, her father Anil Roy is an office superintendent of the Cooch Behar Zilla Parishad.
She finished her part 1 exams and did not return to Delhi after that.
Roy started her career in 2007 with the Ekta Kapoor drama Kyunki Saas Bhi Kabhi Bahu Thi playing the role of Krishnatulsi opposite Pulkit Samrat.
She became one of the players of Arjun's team Mumbai Tigers in Box Cricket League.
She also hosted the dance show So You Think You Can Dance along with Rithvik Dhanjani on &TV.
However, Mohit is playing safe and keeping his love life under wraps as he feared that his lover boy image might not tarnish his Godly image.
Mouni neither accept or deny their special relationship.
Mouni who will be seen in the show Junoon - aisi nafrat toh kaisa ishq says, she likes being in touch with all her co stars and Mohit is no exception.