Rajendran was born on 16 October 1947, to Kandhasamy and Dhanam in Mayiladuthurai, Thanjavur district, Tamil Nadu.

During World War II, his father joined the Indian National Army.

Sivagnanam, the founder of Tamil Arasu Kazhagam, insisting the Government to merge some border areas with the Madras state.

As a lot of social oppression prevailed in Kenikarai, a village in Mayiladuthurai, there were umpteen Periyarists there.

[citation needed] In 1969, he joined the youth wing of Dravidar Kazhagam in Mayiladuthurai and conducted many events with regard to Periyarism such as, Manthirama?

In 1970, K.Veeramani popularly known as Aasiriyar, currently the President of Dravidar Kazhagam called him to Viduthalai office.

When K.Veeramani was arrested under Maintenance of Internal Security Act in 1976, Public Information Bureau censored the contents of Viduthalai too.

In 1983, he organized an cultural forum which addressed the issues regarding Tamil Eelam and was very useful for the DK movement too.

He scripted and performed many plays among which Kazhudhaikku theriyum karpoora vaasanai[கழுதைக்குத் தெரியும் கற்பூர வாசனை] and Sangiliyan [Tamil:சங்கிலியன்] were the popular ones.

[citation needed] In 1996, he started a movement named Periyar Dravidar Kazhagam and became the General Secretary for the same.

Some differences of opinion among the members led to the dissolution of the Periyar Dravidar Kazhagam.

He started functioning as the General Secretary of the movement, Dravidar Viduthalai Kazhagam led by Kolathur Mani from 12 August 2012.

The slogan of the movement is, "Let us defeat the cultural oppression of Brahmins, political domination of the Indian Nationalists and economic exploitation of the Multinationals".