One of the most well-known topics for school essays is to pick someone you consider a hero or an idol. The topic itself is pretty simple and straight forward, but it can also help you develop your characters.
As an exercise try writing a paragraph or a page on who your character would consider an idol. Consider what makes them a hero to your character. What positive values makes them appeal to your character? Also consider in what ways your character relates to and acts like their hero.
The Written Vixen 