a seemingly immortal woman, to which he had been assigned after her family was gruesomely murdered. He is at first confused by the bizarre antics of the agents and the seemingly impossible situations they investigate, but he seems to quickly take it in stride, becoming enthusiastic about the work and offering them his help whenever they need it. This version of Agent Lee has also developed some romantic feelings towards Olivia, but does not fully act upon them due to the complications caused by the return of Peter. His alternate universe counterpart is killed in a shootout during Season 4, and prime universe Agent Lee stays in the alternate universe both to investigate David Robert Jones and because he feels less of a third wheel than with prime Olivia and Peter. Later, in Season 5, Agent Lee is shown to be married to Fauxlivia as they run Fringe division in the Other Universe. Seth Gabel was upgraded to the main cast with the start of Season 4. However, he did not return as a main cast member in season 5. Recurring characters Ella Blake Ella Blake (later Dunham in a possible 2026 reality) is the young niece of Olivia Dunham. The role was primarily played by child actress Lily Pilblad. A futuristic 22-year-old version of the character was portrayed by actress Emily Meade in the third season finale, "The Day We Died". She appears in the first three seasons, and is only mentioned briefly in the fourth season. In her original form, Ella and her mother Rachel, Olivia's sister come to visit and stay in Olivia's Boston apartment after the breakdown of Rachel's marriage. During her stay, she plays on a laptop computer while her mother Rachel is busy in the kitchen. She downloads a program that intends to liquify her brain, but is saved after Olivia and Peter race to the apartment and thwart the murder attempt. She enjoys the friendship that Peter offers her. Rachel considers moving Ella into a local school in Boston where a boy named Graham goes to. The Observers later watch Ella and Olivia enjoy time on a rollercoaster ride together. December states how hard things are going to be for her, without it being clear whether this is Ella or Olivia. In "Brown Betty", she goes with Olivia to the Harvard Lab, where Astrid and Walter babysit her. Walter tells her a fairy