The following are characters whose portrayer received "Starring" billing at any point of the series. They are sorted in the order in which they were introduced to the main cast, and not by episode count, screen time, or popularity.
Zachary "Zach" Young (Cody Kasch) is the "adopted" son of Paul and Mary Alice. Zach's birth parents are Deirdre Taylor and Mike Delfino; however, this, along with his original name of Dana Taylor, is not revealed until "One Wonderful Day".
In season one, Zach is depressed by the sudden suicide of Mary Alice, so Paul puts him in a mental institution. During his stay, Julie sneaks in his room to speak with him but is asked to leave by a nurse. Zach later runs away and is found hiding in Julie's room by Susan and Mike who take him home. He and Julie then start dating. Susan speaks to Paul about Julie and Zach's relationship and is irritated when she thinks he is laughing at her but he insists it will not be a problem as he and Zach will soon be moving away. Zach, however, has other ideas and blackmails him to make sure they stay in Wisteria Lane as the police are asking questions about an old toy box that Zach once had as a similar one has been found with the body of a young woman inside. Whilst at the institution, Zach was diagnosed with clinical depression and a borderline personality disorder which makes his behaviour unpredictable at best so when Susan asks Zach not to see Julie for a while as she is concerned about how fast the relationship is progressing, Zach loses his temper so Susan promptly forbids him to see her ever again and throws him out. Julie initially rebels against this but after Zach scares her at his pool party, she doesn't see him again. In revenge, Zach blows her kitchen up before holding Susan hostage in the first season finale. Zach then goes into hiding and reappears in the second season when Mike and Susan are looking for him. Susan tells him that she wants to help until he says he hopes he and Julie would reconcile. Susan, visibly shaken by this, suggests he go to Utah and find Paul and gives him money for the bus fare. Months later, after Felicia Tilman frames Paul for her murder, Paul begs Zach to ask his grandfather, Noah Taylor, for money to pay a lawyer, claiming it is for a car. Noah refuses, telling Zach that he would not inherit his fortune because of Zach's supposed lack of bravery. Wanting to prove him wrong, Zach turns off Noah's respirator and finds that he has inherited a vast fortune and no longer wants anything to do with Paul. Zach moves to his grandfather's mansion.
Zach reappears in season three as Gabrielle's secret admirer. Zach unsuccessfully tries to impress Gabrielle with luxurious gifts and his wealth. After getting her drunk, Zach lets her believe that they had sex, which she cannot remember. Gabrielle then asks Carlos to scare Zach off, but before Carlos can confront Zach while at the urinal together, he accidentally sees that Zach has an extremely large penis. Carlos assures Gabrielle that if she had slept with Zach, she would remember. Zach proposes at Scavo's Pizzeria but Gabrielle declines as she does not want a relationship with him.
Zach returns in season seven, shooting Paul at the end of the episode "Down the Block There's a Riot". He first appears as a delivery guy delivering flowers to Bree. Later in the episode, a gun matching the one used to shoot Paul is found on Bree's couch after Zach planted it there. It's revealed that Zach is now addicted to drugs and gambling and has lost his entire fortune on both. Paul and Mike both momentarily put their differences aside to help Zach by placing him in a rehab clinic for treatment.
Ana Solis (Maiara Walsh) is the granddaughter of Carlos' Aunt Connie. Ana arrives to Wisteria Lane in the fifth season finale to live with Carlos and his family, as her grandmother had stated she was dying and could not take care of Ana anymore. Gabrielle soon realizes Ana is a very superficial, scheming young girl who uses her good looks to get what she wants. In the sixth season, Carlos wants Gabrielle to sign the legal papers that would define them as Ana's legal guardians, but Gabrielle is not willing to. Ana overhears their conversation and starts acting out even more on purpose to get back at her. When Gabrielle learns this, she immediately signs the papers to keep Ana at ease, 24/7.
Ana reveals she has a thing for Danny Bolen, and when Julie is strangled and sent to the hospital, he asks her to make up an alibi for him. Later, Ana gets a job working for John Rowland, Gabrielle's ex-lover, and develops a crush on him, but John leads Ana on only to get to Gabrielle. When Gabrielle confronts him, he kisses her, and Ana witnesses the kiss. Ana runs home, infuriated, and prepares to tell Carlos, but Gabrielle reassures her that Carlos knows about her past affair with John, and that she is so happy with Carlos right now. She begs Ana not to do anything that would ruin their happiness. Ana keeps quiet, and quits her job.