1. Prashanth was born in Chennai, Tamil Nadu, India.

2. His father, Thiagarajan, is an actor, director, and producer in Tamil films. His grandfather, Peketi Sivaram, is an actor and director in Telugu and Kannada films.

3. Prashanth's paternal cousin is actor Vikram.

4. Prashanth's first film, Vaikasi Poranthachu, was released in 1990 when he was 17 years old.

5. Prashanth won the 1990 award for best new face for his role in Vaikasi Poranthachu.

6. Prashanth has also starred in Jeans (1998), Jodi (1999), and Enakku 20 Unakku 18 (2000). He has also starred in Telugu films such as Arjun (1996) and Swayamvaram (1999).

7. Prashanth has studied at the Trinity College of Music in London and is trained in karate and gymnastics.