system
A chat on subreddit /r/wallstreetbets
human
There are typically no last names in South India - you get an 'initial' which is the first letter of your dad's first name. So the one name thing is pretty common (when you apply for a passport/travel overseas, this initial gets expanded into a last name). Usually actors go by one name and a  newer actor with the same name has to add another name to distinguish themselves. Or they use the name of a famous movie that they starred in as a title in front of the name.

gpt
I'm from northern India and I did not know this about south. Thanks. Now i know why a lot of actors in south are known by first names, like Sudeep, Ambareesh, Vishnuvardhan, Darshan etc. Compare it with Bollywood actors and they are always known by their first/last names, like amitabh bacchan, aamir khan, akshay kumar etc.