After debuting in the Malayalam film Nizhalkuthu (2002), she played a significant role in Cheran's Autograph, following which she played supporting roles in several Tamil films. She later went on to play in a tele-serial called Anjali. She won the Filmfare Award for Best Supporting Actress for her role in Autograph. In 2012, she won a Special Mention from the Jury at the 59th National Film Awards for her performance in the film, Byari, the first ever feature film made in Beary language.
Mallika is born to Johnson and Reetha at Thrissur, Kerala. She has two sisters. Elder sister Roshni is married and settled in Italy. Younger sister Rinku known by screen name Gauri is also acting in movies.
- 2004 : Filmfare Award for Best Supporting Actress -Autograph
- 2012 : National Film Awards Special Mention from the Jury - Byari
- 2013 : Kerala Film Critics Association Awards - Second Best Actress
|2004||Autograph||Kamala||Tamil||Filmfare Award for Best Supporting Actress – Tamil|
|2011||Koratty Pattanam Railway Gate||Annie||Malayalam|
|2011||Byari||Nadira||Beary||National Film Award – Special Mention (feature film)|
|2012||No. 66 Madhura Bus||Bhavayami||Malayalam|
|2012||Mr. Marumakan||Ashok's Sister||Malayalam|
|2012||Ozhimuri||Meeenakshi Pillai||Malayalam||Nominated—SIIMA Award for Best Actress in a Supporting Role|
|2013||Chennaiyil Oru Naal||Satyamoorthi's wife||Tamil|
|2006 - 2008||Anjali||Anjali||Sun TV||Tamil|
- Simple narrative style gets "Autograph" a National Award, The Hindu
- "Archived copy". Archived from the original on 17 December 2013. Retrieved 17 December 2013.