So this doodle is a homage to Encounter specialist Sadhu Agashe played by Nana Patekar. (Done from a photo ref, from the publicity stills for the movie).
About Mumbai Confidential
Mumbai Confidential is a crime noir comic book series created by writer Saurav Mohapatra (DEVI, SADHU, MUMBAI MACGUFFIN, INDIA AUTHENTIC, JIMMY ZHINGCHAK) and artist Vivek Shinde (PROJECT: KALKI, SNAKEWOMAN) set in (of course!) the Indian city of Mumbai.