Heroes are typically selfless, courageous, and morally upright. They are often willing to sacrifice their own well-being for the good of others.
Villains, on the other hand, are typically selfish, cruel, and power-hungry. They are often motivated by their own greed, ambition, or hatred.
Both heroes and villains in melodramas are often driven by their emotions, rather than by reason. They may make impulsive decisions that have unintended consequences. They may also act out of passion, rather than logic.
Melodrama characters are often exaggerated and over-the-top. They may have very obvious character traits, such as a hero who is always kind and gentle, or a villain who is always evil and cruel.
Melodrama characters are often not very realistic. They may be idealized or vilified to the point of being unrealistic. This is because melodramas are not meant to be realistic. They are meant to be entertaining and to appeal to the emotions of the audience.