 The Missing Pieces retained many of the cast members from the television series . Perrineau plays Michael , who had not been seen since the second season . Matthew Fox plays Jack Shephard , the leader of the castaways and Elizabeth Mitchell portrays his love interest , Juliet Burke . Garcia reprises his role as crash survivor Hurley . Kim and Kim play married couple Jin and Sun . Michael Emerson acts as Ben Linus , the leader of the island residents known as the " Others " . Guest stars John Terry , Daniel Roebuck , William Mapother and Julie Adams reprise their roles of Christian Shephard , Leslie Arzt , Ethan Rom and Amelia , respectively . Emilie de Ravin , who plays Claire Littleton , appears solely in archived footage from the television show . Vincent , a dog who survived the plane crash , is played by the dog Pono . Guest star Sean Whalen makes his first appearance as the crash survivor Neil " Frogurt " . While the second season was airing , the writer @-@ producers confirmed in the April 3 , 2006 edition of the Official Lost Podcast that Frogurt would appear in the late second season , however , he was merely mentioned once . Frogurt also did not appear in the third season and he became a running gag in the podcast , with Lindelof and Cuse repeatedly claiming that Frogurt would appear in the show . However , Frogurt did appear in the fifth season briefly , but was shot through with flaming arrows shortly after being introduced . 
