He is perverted because he watches Hannah and gets enjoyment out of it. He is disrespectful because he invades Hannah's privacy. He is a peeping Tom which makes him a creep.
In the beginning, he was a normal high school kid ,but now he is a criminal.
Tyler is on Hannah's list because he was a peeping Tom and took away her only space of privacy.
Jessica was a good friend to Hannah ,but then she was rude and betrayed Hannah.
Jessica is jealous because she thinks Hannah and Alex are hanging out together. She is naive because she believed everything people told her. She is selfish because she never considered Hannah's side of the story.
Jessica is on the list because she hit Hannah and left a scar that symbolized betrayal.
Alex is selfish because he only thinks about his feelings. He is childish because he makes a pointless list about girls. He also is manipulative because he uses people to get back at Hannah.
Alex used to be a good person for Hannah and Jessica to talk to that seemed trustworthy ,but turned out to use people for his own advantage.
Alex is on the list because he put Hannah on his list which caused a snowball affect to Hannah's problems regarding rumors and her self image.