User blog comment:SayuriDarling/Full first chapter of The Mark of Athena/@comment-4246544-20120606185700/@comment-3146930-20120606213929

The cover shows Jason and Percy about to fight. Rick has stated that the cover is a scene that does happen in the book, but Danrah doesn't think they would fight each other as Percy only fights people that are evil or act like Ares. However, Percy got into a fight with Thalia in The Titan's Curse so Percy isn't above fighting his friends.

Jason is a lot more serious than Thalia, so Percy could have a harder time getting along. I mean during the time at the Hover Dam, Thalia and Percy joked about the Dam snack bar while Zoe just sat back confused. If someone like Jason replaced Thalia on that quest, then they would most likely be sitting back with Zoe wondering what was so funny.