The first-look of Marco, headlined by Unni Mukundan, will be out on June 16 at 10:10 AM. Announcing the same on social media, the makers' post was captioned, "Caution⚠️ Carnage ahead🩸 Mark your calenders on June 16th for the First Look Poster!"

Marco is the spin-off of Mikhael, also directed by Haneef. The 2018 film had Nivin Pauly as the titular lead and Unni as the antagonist, Marco Jr. It will delve into Marco's past and introduction to the world of crimes. The makers have claimed it to be the most violent film ever made in Malayalam. It will also be out in Hindi, Tamil, Telugu, and Kannada languages.

Marco also stars Kabir Duhan Singh, Anson Paul, Siddique, Jagadish, Abhimanyu Thilakan, Durva Thaker, Ajith Koshy, Ishan Shoukath, Mathew Varghese and Yukti Thareja among others. The film's technical crew includes cinematographer Chandru Selvaraj, editor Shameer Muhammed and music director Ravi Basrur, known for the Kannada franchise KGF. Kalai Kingson has been signed as the action choreographer.

Last seen in the Tamil film Garudan, Unni's upcoming lineup includes Get-Set Baby, Gandharva Jr, and the long-delayed Mindiyum Paranjum.