A secondary character, in literature, is one that is not as important as the main character – that is, the story does not revolve around him -, but is still necessary for the story to unfold. He can help or hinder the protagonist.
A universal theme is an idea that can be found anywhere at any time. For example, falling in love is a universal theme. You can research literary works from different countries, cultures, or eras, and you will see that falling in love will always be present. The context surrounding the work may be different, but the theme is universal.
