I feel like the author of I am number four saw successful franchises such as star wars and milked the success dry. My main complaint is the similarity of the bad guys, the mogadorians, to the mandalorians of star wars. They behave the same, love for weapons and war, check, destroy their planet for the sake of advancement, check, talented soldiers, check, I could go on about the similarities, It is to the point where it feels unoriginal.