Here's a breakdown of Quintus' role in the story:
* He's a skilled fighter and strategist: Quintus is a Roman legionnaire, trained in combat and strategy. He uses his skills to help the demigods navigate the Labyrinth and fight off its dangers.
* He's a loyal friend: Quintus is fiercely loyal to Annabeth and his fellow demigods. He remains dedicated to their cause and fights alongside them throughout the book.
* He aids in the quest for the Labyrinth's exit: Quintus is instrumental in helping Annabeth and her friends find their way out of the Labyrinth. He provides valuable information and helps them overcome various challenges.
The story doesn't include any mention of Quintus' death. He survives the events of *The Battle of the Labyrinth* and likely continues to serve the Roman legion.