<Ul> <Li> Jessica DiLaurentis (née Drake) (Anne Marie DeLuise, later Andrea Parker) (seasons 1--2, 4--7) is Alison, and Jason's mother and Charlotte's adoptive mother, who spearheaded a charity fashion show in Alison's memory . Jessica DiLaurentis had an affair with Peter Hastings which produced Jason . She returns in Season 4, and it is revealed that she was the one that buried Alison in order to protect the identity of the person who hit her with the rock . She is also thought to be one of Big "A's" minions, due to the fact that she is protecting them . In the season four finale, she is killed by an unknown person and buried by "A". In the season five finale, it is revealed that Mrs. DiLaurentis is actually the mother to Big "A", who is named Charles . In season six, it is revealed that Big "A" is CeCe Drake, who was born as Charles but allowed by Jessica to transition into Charlotte, despite Kenneth's disapproval . She lied to Kenneth, claiming that Charles died . In the finale, it is revealed that Jessica has a twin sister, named Mary Drake, who was actually Charlotte's biological mother . The DiLaurentis family adopted Charlotte . It is eventually revealed that Mary is the one who killed her . </Li> <Li> Jason DiLaurentis (Parker Bagley, later Drew Van Acker) (seasons 1--7) is the half - brother of Alison, Spencer and Melissa . He had an interesting relationship with his late sister; though they often fought, they were both conniving and willing to keep each other's secrets . Jason attended Rosewood High and was friends with Ian and Garrett, who then later formed a club called "N.A.T" (initials from a Latin phrase which means "We See All"). He revealed to Spencer that Alison blamed the accident where Jenna was blinded on her, though Spencer believes Jason knows this to be a lie . After Ian's death, Jason returns to Rosewood, moving back into his old house and papering up the windows, apparently looking for something that Alison hid . He explains to Aria, whom he has romantic feelings for, that he can't remember what he was doing on the night of Alison's murder and that someone sent him a note afterward with "I know what you did," written on them causing him to fear he might have killed Alison . We later find out that Spencer's father had had an affair with Jason's mother . When Spencer finds this out, she knows something's up, and she looks back on memories . When she remembers Ali telling her weird things on a night when her parents had been fighting about Jason and Melissa kissing, she figures out that Ali had subtly told her about Jason being her half - brother . When she approaches him he confirms her suspicions and they become closer and eventually he lends her $2,000 . </Li> <Li> Kenneth DiLaurentis (Jim Abele) (seasons 3, 5--6) is the biological father of Alison and Charlotte DiLaurentis and the legal father of Jason DiLaurentis . He left Rosewood after Alison's disappearance, but returned after Alison was found to be alive . </Li> <Li> CeCe Drake (Vanessa Ray) (seasons 3--present) is an ex-girlfriend of Jason DiLaurentis, who was also friends with Alison . They spent a summer vacation together in Cape May . It seems that CeCe taught Ali her scheming ways, as both act quite similarly . When CeCe returns to Rosewood in Season 3, the girls immediately notice the similarities between the way she acts and how Ali acted . CeCe also learned a lot about the other girls from Alison . She was with Alison and Detective Wilden in Cape May the summer Ali died . It is hinted that she may be scared of Wilden as he was seen in a heated argument with her before she skipped town . In Season 4, it is revealed CeCe was expelled from college, because apparently Alison pushed that girl down the stairs at the frat party shown in Season 1 . CeCe believes the other girls were part of it too . In the episode before the fourth midseason finale, it is revealed she's on "The A-Team" and it is revealed she is Red Coat . Aria kicks CeCe in the face, causing her Ali mask to come off . CeCe falls off the railing, and appears to be dead . However, her hand twitches, and her body disappears, meaning she survived the fall . She was taken into police custody where she admits to knowing who killed the girl in Ali's grave and tells them Ali is alive and that she can prove it . Later that night, she escapes and takes a police car . She heads to New York where she asks for Ali's help . It is revealed that Ezra was paying CeCe for information which is why she was in Ravenswood . Ali asked her to wear the Red Coat to distract "A" so she could turn off the saw . Alison gives CeCe her plane ticket and CeCe boards a plane to France, under the alias "Vivian Darkbloom". In "Game Over, Charles", it is revealed that CeCe is actually "A" and was born as Charles DiLaurentis . CeCe was admitted to Radley Sanitarium as a child, after a misinterpreted incident involving Alison as a baby . Their parents told Jason that she was imaginary . It is claimed that Charles committed suicide at age 16 so that CeCe could transition into Charlotte DiLaurentis . Mr. DiLaurentis was unaware of CeCe / Charlotte's existence and Charlotte eventually began dating Jason to get closer the family and became CeCe Drake . CeCe / Charlotte was given privileges to leave Radley to attend the University of Pennsylvania, and one night Bethany stole her clothes and escaped to hurt Mrs. DiLaurentis . CeCe stumbled upon Alison and hit her, believing it was Bethany . Later, CeCe made friends with Mona, who told her all about the "A" game and the Liars, and CeCe offered her a partnership and she helped CeCe escape, where she became "A". Sometime after this, CeCe hired Sara Harvey to become her accomplice by dressing up as Red Coat and The Black Widow . CeCe was also Red Coat, being the one to watch Mona dig up the grave, don the Emily mask and attend the Hoe Down . After declaring game over, Charlotte was admitted to a sanitarium for treatment . Once the Liars discover who she is, she ends the game . Five years later, Alison petitions the court to release Charlotte, asking the girls to testify in her favor . Charlotte is released and brought home to Alison . However, the next morning her body is found, seemingly having jumped from the bell tower, until the police discover that Charlotte was already dead upon "being thrown". In the season six finale, it is revealed that Charlotte was actually adopted and is the actual daughter of Mary Drake, Jessica's twin sister . </Li> <Li> Mary Drake (Andrea Parker) (season 4, 6--7) is the twin sister of Jessica DiLaurentis and the birth mother of Charlotte DiLaurentis . She was a patient at Radley Sanitarium, where she gave birth to Charles Drake, but allowed her sister Jessica to adopt Charlotte as a child . Mary's whereabouts after that are unknown but she returns to Rosewood after her daughters death, where she is working with Elliott Rollins to drive Alison insane and get Charlotte's money . Mary visits Alison in the hospital and pretends to be Jessica, to fool Alison into thinking she is dreaming . She comforts Alison and tells her that Elliott is a good man for her . However, in the next episode, she disguises herself as a deceased Jessica, while Elliott dresses up as Wilden, and together they scare Alison into committing herself into a mental hospital . Mary is also currently the owner of the Lost Woods Resort . It is revealed in season seven that Mary gave birth to a second child while at Radley . In the summer finale, it is revealed that child was Spencer . In the series finale, Mary joins forces with Uber A to kidnap Spencer, after Uber A forces her . Uber A is revealed to be Mary's daughter, Alex Drake, who is Spencer's twin sister . </Li> </Ul> <Li> Jessica DiLaurentis (née Drake) (Anne Marie DeLuise, later Andrea Parker) (seasons 1--2, 4--7) is Alison, and Jason's mother and Charlotte's adoptive mother, who spearheaded a charity fashion show in Alison's memory . Jessica DiLaurentis had an affair with Peter Hastings which produced Jason . She returns in Season 4, and it is revealed that she was the one that buried Alison in order to protect the identity of the person who hit her with the rock . She is also thought to be one of Big "A's" minions, due to the fact that she is protecting them . In the season four finale, she is killed by an unknown person and buried by "A". In the season five finale, it is revealed that Mrs. DiLaurentis is actually the mother to Big "A", who is named Charles . In season six, it is revealed that Big "A" is CeCe Drake, who was born as Charles but allowed by Jessica to transition into Charlotte, despite Kenneth's disapproval . She lied to Kenneth, claiming that Charles died . In the finale, it is revealed that Jessica has a twin sister, named Mary Drake, who was actually Charlotte's biological mother . The DiLaurentis family adopted Charlotte . It is eventually revealed that Mary is the one who killed her . </Li> <Li> Jason DiLaurentis (Parker Bagley, later Drew Van Acker) (seasons 1--7) is the half - brother of Alison, Spencer and Melissa . He had an interesting relationship with his late sister; though they often fought, they were both conniving and willing to keep each other's secrets . Jason attended Rosewood High and was friends with Ian and Garrett, who then later formed a club called "N.A.T" (initials from a Latin phrase which means "We See All"). He revealed to Spencer that Alison blamed the accident where Jenna was blinded on her, though Spencer believes Jason knows this to be a lie . After Ian's death, Jason returns to Rosewood, moving back into his old house and papering up the windows, apparently looking for something that Alison hid . He explains to Aria, whom he has romantic feelings for, that he can't remember what he was doing on the night of Alison's murder and that someone sent him a note afterward with "I know what you did," written on them causing him to fear he might have killed Alison . We later find out that Spencer's father had had an affair with Jason's mother . When Spencer finds this out, she knows something's up, and she looks back on memories . When she remembers Ali telling her weird things on a night when her parents had been fighting about Jason and Melissa kissing, she figures out that Ali had subtly told her about Jason being her half - brother . When she approaches him he confirms her suspicions and they become closer and eventually he lends her $2,000 . </Li> <Li> Kenneth DiLaurentis (Jim Abele) (seasons 3, 5--6) is the biological father of Alison and Charlotte DiLaurentis and the legal father of Jason DiLaurentis . He left Rosewood after Alison's disappearance, but returned after Alison was found to be alive . </Li>

Who is ali's brother in pretty little liars
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