Final answer:
A flat character shows little change and is one-dimensional, while a round character is complex and dynamic. Phaethon's classification depends on his depiction in the narrative and whether he exhibits significant development and complexity.
Step-by-step explanation:
In literature, characters can be categorized as either flat or round based on their complexity and development throughout the story. A flat character is typically one-dimensional and does not undergo significant change or development, thus remaining static. Conversely, a round character is depicted with a complex personality, exhibits varied traits, and often undergoes development, making them dynamic.
The character Phaethon, from Greek mythology, can be analyzed for these characteristics. If Phaethon is depicted with limited personal growth, little background, and does not surprise the reader with unexpected traits or decisions, then he would be considered a flat character. However, if Phaethon is portrayed with a more developed personality, experiencing changes and growth throughout the narrative, and providing moments of surprise in a believable way, he would be classified as a round character.