Shane was born as eldest among three children, to Mimicry artist Abi and Sunila, in Elamakkara, Kochi, Kerala.

[3] Nigam made his acting debut with the film Thanthonni, later Neelakasham Pachakadal Chuvanna Bhoomi , also in Annayum Rasoolum for portraying the role of Anna's (Andrea Jeremiah) brother.

[5] Nigam played a central character alongside veteran actors Amala and Manju Warrier in the 2017 film C/O Saira Banu.

[8] By the end of 2019, Shane received a death threat from Malayalam film producer Joby George, which the actor shared through Facebook live, causing controversy.

[10] He supported the 'All Eyes on Rafa' campaign and claimed in his Instagram story that he is a ‘Sudapi from India,’ a term used in Kerala to represent someone who is an Islamist.