In The Lord of the Rings: The Return of the King, Serkis himself appears in a flashback scene as Sméagol before his degeneration into Gollum. This scene was originally earmarked for The Two Towers, but was held back because the screenwriters felt audiences would relate better to the original Sméagol once they were more familiar with who he became. The decision to include this scene meant that Raitt and Jamie Beswarick had to redesign Gollum's face for the second and third films so that it would more closely resemble Serkis'. Serkis once again played Gollum in the 2012 prequel film The Hobbit: An Unexpected Journey. In Jackson's films, Gollum has a split personality: the childlike "Sméagol" and the evil "Gollum". Screenwriters Fran Walsh and Philippa Boyens included scenes in The Two Towers, The Return of the King and An Unexpected Journey in which "Gollum" and "Sméagol" argue, with Serkis slightly altering his voice and body language to play the two as separate entities. This style was praised by the Tolkien scholar Tom Shippey who described the Jackson interpretation as "masterful" and the additional scenes as "especially good".
