Madison Drake played by
Seraphina Beh, and '''Alexandra D'Costa''', played by Sydney Craven, are school friends of
Louise Mitchell (
Tilly Keeper). They first appear together in the episode broadcast on 17 January 2017, Alexandra and Madison help Louise come up with a plan to get revenge on
Shakil Kazemi (
Shaheen Jafargholi) and
Keegan Baker (Zack Morris), who have teased Louise about how scared she was during the crash, and Louise inadvertently shows them a naked photo that Shakil sent to Bex. Under Madison and Alexandra's instruction, Louise gets Bex's phone and sends Shakil's naked photo to them and Bex is left distressed when she finds out what Louise did and that the photo has been sent to another person. Bex receives an anonymous Valentine's card and believes Shakil sent it, however, realises that Madison and Alexandra sent it as a joke. After finding out Bex has had sex with
Preston Cooper (
Martin Anzor), Madison and Alexandra spread it around online. Madison and Alexandra overhear Bex insult them when she confronts Louise over their friendship. In the toilets, Madison and Alexandra push Bex, Madison tears her shirt and Alexandra writes "dirty" on her face while Louise stands outside. Bex then admits to the headteacher,
Mrs Robyn Lund (
Polly Highton), and teacher
Mr Gethin Pryce (
Cerith Flinn), that Louise, Madison and Alexandra were responsible for sending the photo, When Bex works alongside her aunt
Michelle Fowler (
Jenna Russell) in the café, Madison and Alexandra make remarks about them both being with Preston and laugh when Bex shouts at Michelle. When Alexandra sees Bex in the local shop, she knocks the sugar she is buying out of her hands and sticks chewing gum in her hair when she goes to pick it up. Later, Bex goes to the café where her great-aunt
Kathy Beale (
Gillian Taylforth) asks her to serve Alexandra and Madison their drinks; they insult her and Alexandra trips Bex, causing Kathy to spill soup on Madison. They leave and order Louise to come with them. They later find Bex in the local chicken shop and Madison tells Bex that she owes her a new top, and Alexandra insults Bex's weight. They then tell Bex that they will always be around and she cannot escape them. Later, Louise, Alexandra and Madison arrive at Bex's house and her stepmother,
Stacey Fowler (
Lacey Turner), lets them in, where Alexandra threatens to smash Bex's guitar. Louise tries to stop her from doing it but Alexandra stamps on the guitar, leaving Bex in bits. The next day, Madison apologises to Bex, saying that she is no longer involved with Alexandra and warns her that Alexandra is planning to cut her hair. Later the same day, Alexandra and Louise tell Bex that they are planning revenge on Madison, so Bex warns Madison of this; Madison thanks her and they meet up, where Madison offers her truffles. As Bex is revulsed by the taste, Alexandra and Louise emerge, filming Bex's reaction, saying it was cat faeces. Bex later watches a video they posted online of them making the fake truffle from mud and showing Bex's reaction. Bex's mother
Sonia Fowler (
Natalie Cassidy) reports Bex's bullying to the school but keeps Louise's name out of it on Bex's request. Madison and Alexandra take Louise's school books and hide them, but later return them to her after she gets detention. This causes Louise to miss a drama rehearsal and they tell her she cannot miss another one or she will be unable to take part in a talent show. When Michelle starts community service, Louise, Madison and Alexandra tease her. Madison and Alexandra graffiti "cougar" on a wall, targeted at Michelle. They tell Louise she could have a chance at going out with Travis, and though she says Alexandra is more his type, they laugh at Louise's crush when she leaves the room. Later, when Louise's stepmother,
Sharon Mitchell (
Letitia Dean) and Michelle get home drunk, Alexandra and Madison are amused when Louise berates them and tells them how alcohol has affected her family, so they decide to use it against her. Louise is taken to hospital with paralysis and when she is sent home, Madison and Alexandra turn up and they tell her that Keegan filmed what happened and was going to post it online but they stopped him, and they tell Louise, Sharon and Ben that Travis was responsible for spiking her drink. Louise believes Travis could have been framed, but Madison and Alexandra convince her that he is lying. After speaking to Sharon's son
Dennis Rickman Jnr (
Bleu Landau), about the party on Travis's behalf, Bex tells Louise that Alexandra followed Travis into the kitchen, and Alexandra interrupts them. Alexandra gets herself out of trouble by telling Louise and Bex that Travis may not have been responsible for spiking her drink and Louise insists that Madison and Alexandra are still her friends, but Bex worries that they have targeted Louise. Sharon wants to meet Travis, inviting him for dinner, but Louise calls it off when Madison and Alexandra plant doubts that Travis is a cheat. Keegan tells Louise that they had sex at the party, but Louise says he is lying, but worries after Madison and Alexandra tell her that Keegan is telling people about Louise's birthmark. Madison and Alexandra then tell Louise that Keegan has
chlamydia and he gave it to another student. When Travis breaks up with Louise, Madison and Alexandra tell him that he did the right thing. When Louise decides to pull out of the school showcase, Alexandra asks Travis to sign her up to replace Louise as Juliet in
Romeo and Juliet, and later Alexandra tells Louise that she is now playing the part but only because Mr Pryce was desperate and she did not really want it. Bex tells Louise that Alexandra is lying but Louise believes Alexandra. During rehearsal, Alexandra's acting is wooden but she confidentially kisses Travis, though Mr Pryce tells her she should act shy. Alexandra overhears Bex telling Shakil that Alexandra will mess up in the showcase so decides to take revenge. Before Bex's performance at the showcase, Madison and Alexandra break a guitar string and when Bex looks for one in the classroom, Madison and Alexandra pin Bex up against a wall. Shakil hears the bullying through headphones and intentionally turns up the volume through the soundboard for everyone to hear; exposing them. Alexandra and Madison are publicly shamed and humiliated after Louise smugly tells them that they are caught out. They are then angrily ordered by Mrs Lund to her office. Louise and Bex make statements against Alexandra and Madison to Mrs Lund and Louise realises what they are really like. Madison and Alexandra watch the prom from the balcony. Travis arranges an area behind the stage with candles for him and Louise. Alexandra and Madison turn up and Louise berates them and their actions and Alexandra pushes Louise onto lit candles, setting off the fire alarms and sprinklers. Louise is in agony as Mr Pryce and other students help her by cooling the burns with water. Keegan is sickened by Madison and Alexandra's actions and drags them onto the stage, where Alexandra denies it being their fault. The police arrive to get statements where Madison and Alexandra turn against each other as Alexandra tries to blame Madison. Madison and Alexandra are both arrested for
GBH and students insult the pair as they are escorted out. Mr Pryce visits Bex and Sonia and tells them that Madison and Alexandra will be prosecuted.
Development Beh's casting in
EastEnders was announced on Twitter by her management, Hero Talent Group. Alexandra and Madison were called "mean girls" by a writer for ''
What's on TV?, while Duncan Lindsay from the Metro said they are not as "trustworthy" as they seem. Lindsay also said that through the young characters, EastEnders
"is nailing the representation of the various young characters you find in school environments" and that Beh and Craven "are doing a commendable job with those bitchy characters." Their revenge plan against Shakil was called "spiteful" by Sophie Dainty from Digital Spy''. Laura-Jayne Tyler of
Inside Soap dubbed Alexandra the "vilest villain in soap right now", and added "No one has us screaming more abuse at the telly!" Tyler later said Alexandra was "a vicious, spiteful girl... but she has a spark about her." She compared the character to a young
Tiffany Mitchell (
Martine McCutcheon) and hoped she might be redeemed in the future. When Madison and Alexandra began to bully Louise while still pretending they were friends, they spiked Louise's drinks at a party resulting in her collapsing, they were described as "vicious" and "evil teens." Beh and Craven hinted that the backstories of their characters could be explored, saying "there's a reason why" their characters are the way they are as "most people who have that kind of lifestyle tend to have a reason behind it." ==Travis Law-Hughes==