the main antagonist is a person named Luke he is nice but when you get to know him hes very very angry and mad if you get on his bad side .Two important quotes would be : 1.WE WILL RESURRECT KRONO'S! 2. I will bring back Krono's and RULE THE WORLD! . These quotes are important because it shows Percy and his brother what they are going to be up against in the next few seconds. Also it explains how Luke doomed and is now going to be chewed up by his mistake and his own choices!