Full cast of Helix

Billy Campbell

Dr. Alan Farragut

26 episodes

Meegwun Fairbrother

Daniel Aerov

26 episodes

Jordan Hayes

Dr. Sarah Jordan

26 episodes

Mark Ghanimé

Major Sergio Balleseros

26 episodes

Neil Napier

Dr. Peter Farragut

26 episodes

Kyra Zagorsky

Dr. Julia Walker

26 episodes

Hiroyuki Sanada

Dr. Hiroshi Hataki

26 episodes

Robert Naylor

Spencer / The Scythe / Spencer / The Scythe / Spencer / The Scythe

16 episodes

Cat Lemieux

Dr. Doreen Boyle

13 episodes

Steven Weber

Brother Michael

13 episodes

Matt Long

Dr. Kyle Sommer

13 episodes

Cristina Rosato

Leila Weisner

13 episodes

Severn Thompson

Sister Anne

13 episodes

Alison Louder

Sister Amy

13 episodes

Sarah Booth

Sister Olivia

9 episodes

Amber Goldfarb

Jaye

6 episodes

Jeri Ryan

Constance Sutton

3 episodes

Christian Jadah

Lt. Klein

3 episodes

Julian Bailey

Lt. Humphries

3 episodes

Tamara Brown

Dr. Sulemani

2 episodes

Erica Anderson

Grace

1 episode

Patrick Baby

Dr. Duchamp

1 episode

Lucas Chartier-Dessert

Henri

1 episode