Here's some info about the twins' friends:
Amy Sutton- Elizabeth's best friend and co-editor of the Sixers. Shares Elizabeth's opinion of the Unicorns. Quite a tomboy. Jessica calls her a nerd.
Lila Fowler- Jessica's best friend. Also a member of the Unicorns. Incredibly rich, but Elizabeth says she's also incredibly snobbish.
Julie Porter- One of the Sixers' staff and one of Elizabeth's friends.
Mandy Miller- A member of the Unicorns. Liked by both Elizabeth and Jessica. Good at thinking up cool outfits. A previous cancer patient.
Maria Slater- Elizabeth's friend and one of the Sixers staff. Jessica thinks she's cool because she's once been a child movie star.
Ellen Riteman- One of the Unicorns. Elizabeth says she is like Lila minus Lila's smartness and wealth.
Sophia Rizzo- One of the Sixers staff. Jessica and the Unicorns scorn her because she is the sister of a problem child.
Kimberly Haver- A seventh-grader and a member of the Unicorns. The school's volleyball team captain. Both Elizabeth and Jessica think she is incredibly bossy.
Mary Wallace- A member of the Unicorns. Quite timid. Liked by both Elizabeth and Jessica.
Janet Howell- President of the Unicorns and Lila's first cousin. One of the most popular girls at school. Disliked by Elizabeth. Also rather disliked by Jessica but Jessica respects her because of her position as president.
Steven Wakefield- The twins' brother, and, according to them, fourteen going on obnoxious. Janet Howell has a crush on him, however.
Robin- The twins' cousin who is the same age as them and lives in San Diego. When the three girls get together, they seem more like triplets than cousins sometimes.
Stacey- Robin's younger sister. She is eight years old.
Kelly- Another of the twins' cousins. She is also the same age as them. She moved from Sweet Valley to Tucson four years ago and her parents have just divorced.
Todd Wilkins- Elizabeth's sort-of boyfriend through middle school. He is on the school's boy's basketball team.
Aaron Dallas- Jessica's sort-of boyfriend through middle school, although she claims he can be kind of annoying sometimes.
Bruce Patman- Incredibly rich. Jessica thinks he is cute but Elizabeth thinks that he is also a snobbish jerk.