I need help choosing a book title.

So I am writing a novel that takes place in Greek times and it is about a 16 year old boy whose parents get kidnapped by an evil Warlord who tortures the boy's parents. He is also planning to enslave everyone on Earth. The boy then goes on a quest to save his parents and save Earth from being enslaved. Along the way he encounters Dragons, Trolls, Giants, and even the Ancient Greek Gods and Godesses. Would anyone happen to know a good title for this book?