I don't know as I haven't watched it. So I can't tell you the main characters.
I'm sorry, without having seen the 'uravugal thodarkathai serial hindi story', it's impossible for me to say who the main characters are. You might try reaching out to fans of the serial on social media platforms. They would surely be able to tell you all about the important characters, their roles, and how they contribute to the overall story.
I'm sorry, I'm not very familiar with the specific 'uravugal thodarkathai' serial in Hindi. It might be a regional or less - known serial. You could try to find more information on some specialized Hindi serial - related websites or forums.
I'm sorry, I haven't actually watched this serial so I can't summarize it directly. You could try looking for plot summaries on entertainment websites or fan forums.
I'm afraid I can't as I don't know this serial well.
Since I don't have the exact details of the 'Nagini 2' Hindi serial story, it's difficult to name all the main characters. But Nagini is bound to be a main character. There may be other characters around her like her romantic partner if there is a love angle in the story. There could also be some authority figures in the fictional world of the serial, like a king or a leader, who might be involved in the plot either as an ally or an adversary to Nagini.
I don't know the 'uttaran hindi serial story' well enough to name the main characters.
I'm not entirely sure about all the main characters, but there is surely the young girl around whom the story revolves. There might also be her parents as they play important roles in shaping her life in the story.
I'm not sure as I don't know the 'Sithara Hindi serial story'.
As I don't know the 'tara hindi serial story' well, it's impossible to say who the main characters are. They could be Tara herself, along with her family members like her parents, siblings. There might also be friends or love interests, but this is all just guesswork.
In the Madhubala Hindi serial story, the main character is obviously Madhubala herself. She is often the one around whom the entire story revolves. Then, there could be a male protagonist who is her love interest. He might be a wealthy or influential person. Her mother could be another main character, who might be a source of support or sometimes add to the family drama. And her father, who could be strict or have certain expectations from Madhubala. There might also be a best friend character for Madhubala who is there to support her through all her ups and downs.
I'm not entirely sure about all the main characters in 'Rangrasiya' as it's been a while since I've watched it. But usually in such Hindi serials, there is a male lead and a female lead who are at the center of the story. They are likely to be the ones whose love story drives the plot forward.