In the play Julius Caesar, Ligarius is being used as a foil to Brutus. A foil is a literary term that refers to a character who contrasts with another character in order to highlight their differences.
To analyze the characteristics brought out, you can compare Ligarius to Brutus. Look for traits that are opposite or contrasting between the two characters. For example, if Brutus is portrayed as noble and honorable, Ligarius might be portrayed as deceitful or untrustworthy. This contrast in characteristics helps to bring out the qualities of Brutus more prominently.
You can refer to the text of Julius Caesar to observe the interactions between Ligarius and Brutus and how their differences are emphasized. Pay attention to the actions, dialogue, and attitudes of both characters in order to understand the contrasting elements and how they contribute to the overall story.