
Marzena Godecki
as Neri (series 1)

David Hoflin
as Jason Bates (1)

Jeffrey Walker
as Brett Bates (1)

Marzena Godecki
as Neri (series 4)

David Hoflin
as Jason Bates (4)

Jeffrey Walker
as Brett Bates (4)

Kerry Armstrong
as Dr. Dianne Bates

Alex Pinder
as Dr. Winston Seth

William McInnes
as Commander Jack Lucas

Cassandra Magrath
as Zoe Kondelos

Joel De Carteret
as Jake 'Froggy' Reily

Jacalyn Prince
as Vanessa Lane

Andrea McEwan
as Lee Lucas

Bryony Price
as Jodie

Guy Mallaby
as Damien Harris

Miki Oikawa
as First Officer

Melvin J. Carrol
as Second Officer

Nicholas Bell
as Dr. Hellegren

Lauren Hewett
as Mera

Kristy Barnes Cullen
as Joanne Rhodes

Sam Johnson
as Robert 'Rocky' Rhodes

Claudia Buttazzoni
as Kimberly McGuinnes

Pamela Rabe
as Commander Byrne

Anthony Hayes
as Michael 'Mick' Byrne

Terry Serio
as Captain Sam Philips

William Gluth
as Dr. Parker Forsyth

Sonya Suares
as Liselle

Caitlin McDougall
as Lieutenant Borg

Liz Burch
as Dr. Dianne Bates (#2)

Jeremy Angerson
as Kal

Brooke 'Mikey' Anderson
as Cassandra Clayborn

Joelene Crnogorac
as Lena Hellegren

Sudi De Winter
as Benny Malcovitch

Olivia Hiddlestone
as Sallyanne Taylor

Verity McIntyre
as Morgan Clayborn

Tony Briggs
as Dave Hartley

Bruce Hughes
as Commander Wellington

Nadja Kostich
as Kellar

Susan Gorence
as Mrs. Clayborn

Jean Pierre Mignon
as Dr. Malcovitch

Petra Yared
as Patti

Kee Chan
as Mr. Lee

George Henare
as Malakat

Tharini Mudaliar
as Shersheba

Gregory Ross
as Paul Bates

Mark Neal
as Jake Shelby

Brenda Monaghan
as Elly Hauser

Paul Sonkkila
as Theodore J. Richter

Damien Bodie
as Louis Danton

Michael Veitch
as Officer Danton

Marie-Louise Walker
as Shalamorn

Barry Friedlander
as Garron

Heath Bergerson
as Jakamarra

Molly McCaffrey
as Emma Redfield

Rhonda Rees
as Ilona

Kim Carter
as Ilona's Mother

Catherine Wilkin
as Madame President