14-year-old Avery Jennings is the highly intelligent, hardworking stepsister of Tyler James. She hates the fact that Tyler feels everything has to go his way and that good things always happen to him, such as in the pilot when Tyler "books" the living room as an excuse to have the school's cheerleading squad come over. Avery is very straight forward in following the rules and reluctanly goes along with what Tyler does. She is very smart, an overachiever, and knows what she wants, and what she wants to do is get into law school. She wants everything to be handled in an orderly fashion , such as posting sign-up sheets for the living room and the bathroom. Avery is socially responsible and despises boys like Tyler, although the two do have brother - sister heart-to-heart discussions showing that, at the end of the day, no matter how much Tyler annoys her, they love each other. Avery is a very good problem-solver, the school president, and an amazing juggler.
Avery is a the average height for her age, with long blonde hair with black roots. Sometimes she has her hair straight, held back by a hairband, or curly. She has brown eyes. She usually wears girly outfits with bright colors and dresses more sophisticated.
Relationships with other characters
Tyler and Avery have a complex relationship. Even after a year of their two families merging, the step-siblings always bicker. After Bennett brings Stan home from the shelter, Avery and Tyler bond a lot quicker, as Bennett had told Ellen would happen. Often Avery's organization and intellegence clashes with Tyler's disorganization and lazy attitudeEven though Avery and Tyler are different from each other they use their skills to come up with a plan along with Chloe and Stan.. They have a classic sibling relationship; they may appear to dislike each other, but on the inside they truly love each other. Stan and Chloe often play peacekeeper during their fights.
Ellen is Avery's biological mother and one of three biological relative in the Jennings-James family. When Avery was younger, Ellen often took Avery to the park. One of their Christmas traditions was that Avery did not make a list, which always resulted in Avery recieving a gift that she did not like, leading her to believe that her mother didn't really understand her. Ellen actually does understand Avery and the other kids, and puts 110% of work into making sure that they know that she loves, trusts, and respects them.
Chloe is the half-sister of Avery. She is the youngest in the family. Avery and Chloe get along, but often Chloe does crazy things that Avery and the rest of the family cannot believe. Chloe loves animals and has a wide imagination. Avery and Chloe are good family members and love each other in a sisterly way. Avery, unlike Tyler, sees through Chloe's manipulative cute eyes.
Stan is the family dog and Avery's best friend; of all the kids, Avery shares the closest bond with Stan, and she often comes to him for advice although occasionally she's too stubborn to admit her problems or when she's wrong. Stan cares deeply for Avery and often has problems in their friendship that relate to his being a dog, such as when he was afraid of his dog-years limiting how much time he might have left with Avery until he realized he had to live in the present rather than worry about the future.