Kyle arrives in
Walford and watches
Stacey Slater (
Lacey Turner) from afar. He briefly attends her Halloween party, and when he leaves it is revealed that he has a similar key around his neck that Stacey used to have. Kyle sits behind Stacey at a Church service and she asks him if she knows him, but he leaves when she notices him. Stacey tells her boyfriend
Martin Fowler (
James Bye) and her mother
Jean Slater (
Gillian Wright) that she is being stalked, and Jean discloses that she was visited by someone. Jean eventually reveals that Stacey's father, Brian Slater, had another family, and Stacey realises that Kyle is her half-brother. Kyle tries to reveal himself to Stacey and comes to Walford with his close friends
Sophie Dodd (Poppy Rush) and
Ricksy Hicks (Joel Phillimore) as support. Kyle tells Stacey that he is her half-brother and they talk about their father. Kyle tells Stacey about his sisters, Siobhan and Shannon, and gives Stacey envelopes that were in Brian's
safety deposit box for her and her brother
Sean (
Robert Kazinsky). Stacey realises that Kyle is the only one of Brian's children whose name does not begin with an S. They agree to stay in touch, and Kyle tells Sophie that he does not want Stacey to know his secret. When Stacey has a mental breakdown, she runs away from Walford with her baby
Arthur Fowler and calls Kyle, feeling he is the only one she can trust. Kyle takes Stacey to a café and calls Martin, who calls Kyle a fraud due to finding out that Brian only had daughters with his other family. When Martin tells Stacey that Kyle is not her brother, she believes that he is the
Devil and runs away. Kyle is warned off by Martin and
Kush Kazemi (
Davood Ghadami). Kyle then returns at
Charlie Slater's (
Derek Martin) funeral, which causes Stacey to freak out and flee with Arthur. Kyle returns a month later to give Stacey a box from Brian's safety deposit box. Martin blames Kyle for Stacey's
Postpartum psychosis and being sectioned and warns him away from Walford. Kyle later visits Stacey during her home visit and explains to her that he is
transgender and used to be called Sarah. Stacey is accepting and allows Kyle to move in. Stacey arranges a lunch with Kyle and her family, where Kyle reveals that he is trans after Jean refuses to believe him. Stacey is angry at Jean for her prejudice towards Kyle. Kyle later gets a job as a chef in
Ian Beale's (
Adam Woodyatt) restaurant. Kyle briefly feuds with
Andy Flynn (
Jack Derges) when he appears to be flirting with Stacey despite her engagement to Martin. Kyle tries to shake Andy off the ladder but stops after Stacey reminds him that that is how Brian died. Kyle is disappointed when Walford residents start to realise that he is trans but they are accepting. Stacey, having been told by Kyle that his mother,
Alison Slater (
Denise Welch), never accepted him as a man, invites Alison over and tries to get them to reconcile. Alison tells Kyle that she cannot accept him as he is not Sarah and leaves, though she tells him that she is glad that he is not alone. This devastates Kyle, but Stacey tells him that there is hope. Kyle is happy when Stacey and Martin get married. Kyle finds Andy's file filled with photos and newspaper clips of
Ronnie Mitchell (
Samantha Womack), and when he asks Andy he tells him that it is not his business. The restaurant that Kyle is working at is robbed, and Kyle later finds out that
Steven Beale (
Aaron Sidwell) was behind the robbery when someone arrives to complain about the dodgy kitchen equipment Steven sold them. Kyle keeps quiet after Steven pays for Kyle to attend an expensive cooking course with a celebrity chef. The
Slater household begins to get crowded and the bills become worse, so Kyle asks Steven for a pay rise. When Steven says no, Kyle threatens to tell the truth about the robbery. Following the cooking course, Kyle is featured in a magazine and is
headhunted for a job in France. Kyle wants to take the job but does not want to worsen Stacey and Martin's financial problems. However, Stacey, Martin and Ian encourage Kyle to take the job and follow his dreams. Kyle's confidence is boosted when Alison phones him and calls him Kyle for the first time. Kyle then cooks a final time for his family and leaves. ==Reception==