Who is not a flat character in the Tragedy of Julius Caesar?

The Tragedy of Julius Caesar features several characters who display depth and complexity beyond mere flat archetypes. One such character is Brutus, who grapples with his conflicting loyalties and moral dilemmas. Brutus is not a one-dimensional villain or hero but rather a nuanced and conflicted individual. His internal struggles and psychological complexity make him a round character.

In contrast to Brutus, characters such as Casca, Cinna, and Flavius are relatively flat. They primarily serve to advance the plot and provide specific functions within the play. While they fulfill important roles, such as providing information or inciting action, they lack the multifaceted traits and inner conflicts that define a round character.

Therefore, the answer to who is not a flat character in the Tragedy of Julius Caesar is Brutus.