The film stars Asif Ali, Indrajith Sukumaran, and Arjun Ashokan in the lead roles, alongside an ensemble supporting cast.

[4] The film's script is written by Kiron Prabhakar,[5] based on a book titled Runaway Children by S. Hariharan, a social worker.

[10] In an interview with an online media in April 2022, Resul Pookutty said that his film will have Shobana, Asif Ali, Indrans, Arjun Ashokan, Sathyaraj, Rohini, Shyamaprasad, Renji Panicker, Adil Hussain, and Divya Dutta appearing in prominent roles.

[11] Shobana, who was taking a break after her previous film, Varane Avashyamund (2020), was approached to play a role, which she agreed to after hearing the story.

[14] The film's soundtrack album consists of five songs composed by M. Jayachandran, while the lyrics are written by Rafeeq Ahamed and Vairamuthu.

[19] The vocals are given by Shankar Mahadevan, Shreya Ghoshal, P. Jayachandran, Jassie Gift, Alphons Joseph and Benny Dayal.

[24][25] S. R. Praveen of The Hindu wrote "Despite an ensemble cast, only some of them get characters having enough to do to even register in our minds in Asif Ali and Arjun Ashokan's 'Otta'.

"[26] Anandu Suresh of The Indian Express gave 1 out of 5 stars and wrote "Otta demonstrates that even with a team of brilliant technicians and actors, a film is destined to collapse without a strong foundation comprising a well-developed story and script.

Arun Verma's enriching cinematography, Zian Sreekanth's seamless editing, and Cyril Kurivila's invisible art direction make this the film of the year and one you won't forget for a very long time.