Kavya in Anupamaa, Bhavani Chavan in Ghum Hai Kisikey Pyaar Meiin and more: Top TV villains who had massive hriday parivartan that fans found hard to digest

Anupamaa, Ghum Hai Kisikey Pyaar Meiin and more TV shows have characters that play grey shades. They are as popular as heroes. But what makes them change?