Ever since Power Star Pawan Kalyan reprized the role as 'Siddhu..Siddhartha Roy' in industry hit 'Khushi', the name turned out to be the lucky sentiment for heroes as most of the movies, which have hero's name fixed as 'Siddhu', turned out to be blockbusters.
Pawan Kalyan's name in 'Atharintiki Daredi' was Gautham Nanda. But then, he disguised as 'Sidhdhu' in his aunt Nadhiya's house. As such, Pawan Kalyan was seen as 'Sidhdhu' in both the industry hits he enacted.
Mega Power Star Ram Charan was named 'Sidhdhartha Nayak' in his blockbuster film 'Naayak' and his pet name obviously is 'Siddhu'. Hero Siddharth's name in blockbuster film 'Bommarillu' was 'Siddhu'. And latest blockbuster 'Kumari 21F' has its hero Raj Tarun got the name as 'Siddhu'. Allari Naresh's 'Siddhu from Sikakulam' got above average result at the box office.
Likewise, Harsha name for protagonists in 'Magadheera' and 'Srimanthudu' got them industry hit and blockbuster respectively. 'Lucky' name turned as a lucky sentiment for 'Race Gurram' and 'Bhale Bhale Magadivoy'. Long ago, Megastar Chiranjeevi scored many industry hits and blockbusters with the name 'Raju' in those movies.