Lion) is an Indian Tamil-language action film series centered around the titular character Duraisingam, a short-tempered honest cop with an aim to eliminate corruption from the society.

Singam, the first installment of the series, tells about SI Duraisingam, a tempered-but-honest police officer, who tries his best to eliminate a powerful don named Mayil Vaaganam.

Singam 2, the second installment of this series, continues the story, where Duraisingam was sent to Thoothukoodi in order to stop a drug cartel running by Bhai and Thangaraj and their African boss Danny.

[citation needed] Si3 was the third installment of the series, continues the story, where Duraisingam was transferred to Andhra Pradesh as DCP, to nab an Australian bureaucrat named Vittal Prasad, who illegally exports toxic waste to India.

[20] The Times of India lauded Suriya and Hari, writing,"[His] consistency in handling cop stories convincingly and entertainingly needs to be commended as he has been proving his expertise repeatedly".

[21] The New Indian Express similarly praised Suriya, but found "as a commercial film director, [Hari's] storytelling methods also suffer from following a set of rules, which include frequent yawn-inducing songs".