Special Guest Stars Lance Reddick as Phillip Broyles Seth Gabel as Lincoln Lee Guest Stars Michael Cerveris as September Anna Torv as Olivia Dunham (Alt Universe) Michael Kopsa as Captain Windmark James Kidnie as The Commander Co Starring Eugene Lipinski as December Rowan Longworth as Michael Abagayle Hardwick as Young Henrietta "Etta" Bishop Jordan Schartner as ND Observer Mackenzie Gray as Observer Physician #1 Peter Kelamis as Tobin Natalie Brooke Edwards as Young Fringe Agent Sarwan Badesha as Alt Universe Fringe Agent #2 Craig Fraser as Loyalist Guard #1 Tara Pratt as Alt Universe Fringe Agent #1 Peter Flemming as Loyalist Lieutenant Lucas Wolf as Observer Physician #2 Ivan Wanis-Ruiz as Amon Jonathan Fitzgerald as Observer #2 Rustin Gresiuk as Trevor Lee Simon Hill as Observer Surgeon Andrea Yu as Alt Universe Fringe Agent #4 Vanessa Zachos as Loyalist Nurse