[2] Later, he went on to star in several commercially successful films, including Vikramadithyan (2014), KL 10 Patthu (2015), Style (2016), Oru Murai Vanthu Parthaya (2016), Achayans (2017), Malikappuram (2022) and Marco (2024), the last two emerged as his highest-grossing releases.

[12] Unni entered the Malayalam film industry with Bombay March 12[13] featuring alongside Mammootty, directed by Babu Janardhanan.

[26] He was then seen in the critically acclaimed movie Kaattum Mazhayum and fantasy romantic comedy film Oru Murai Vanthu Parthaya.

[27] Unni made his Tollywood debut with the film Janatha Garage in an antagonistic role as Raghava, son of Sathyam (Mohanlal).

[30][31] In the same year, he was seen in another multi-starrer movie Avarude Raavukal along with Asif Ali which received mixed reviews.

[35] In 2018, he did the Tamil-Telugu bilingual film Bhaagamathie featuring Anushka Shetty which was commercially successful and critically acclaimed.

[47] In 2024, he starred in Jai Ganesh, which he also produced, and portrayed a negative character in the Tamil film, Garudan.

[50][51][52] Under this banner Unni Mukundan produced films: Meppadiyan (2022), Shefeekkinte Santhosham (2022), Jai Ganesh (2024) and Marco (2024).

[53] Unni sponsored road safety measures by appearing in the motor vehicle department's advertisements.

[54] He was caught mouthing expletives during a phone call with a YouTuber (secret agent) after receiving what he claims to be personal attacks in the guise of reviews for his movie Mallikapuram .