Henry Foss is an abnormal member of Dr. Helen Magnus' team in the Old City Sanctuary. A self-proclaimed geek, Henry is both a weapons designer and a brilliant computer scientist, not only supplying new gear to the team for missions, but regularly maintaining Sanctuary's defenses, and keeping them working just as well.[3]


Henry was found on the Moors as a child by Dr. Helen Magnus,[4] who took him back with her to the Old City Sanctuary. There, she raised him together with her biological daughter Ashley Magnus,[5] while Bigfoot served as a father figure.[6] He has no memory of his biological parents.[7]

Within the Sanctuary, Henry takes care of the Sanctuary’s defenses such as the EM Shield, and designs weapons, for example the stunner.[8] He also takes care of household problems that may arise, such as "unclogging plumbing disasters".[9]

He is an abnormal, specifically a Therianthrope / class nine Hyper-Accelerated Protean life form,[10] more specifically a Werewolf / Lycan.[11] For most of his life, only Helen Magnus and Bigfoot are aware of this[12] and does not want anyone else to know.[13] He holds off relationships and is afraid to open up, even to close friends.[7]

He takes medication (a mixture of Diazepam and other drugs)[11] to suppress the transformation from happening; similar to how Nikola Tesla takes medication to guard against the bloodlust brought on by his vampiric nature.[13] For a long time he ignores his abnormal side in the hope that it will just go away, but does eventually change in spite of the medication.[13] After this, he briefly considers surgery (consisting of excising portions of both the pituitary and pineal glands) to rid himself of his abnormal nature, because he fears he will hurt those around him. He ultimately decides against the surgery when he manages to track Robbie Meyers and realizes his power’s potential if he learns to control it.[4]

Over time, he shows growth in the level of control he possesses over his abnormal side, as predicted by Bigfoot,[4] as well as in his of acceptance of it. In Episode 1x12 - "Revelations, Part I" Henry is captured by the Cabal, who plan to turn him into a werewolf permanently. He tells his captors that his abnormality is not a condition and that he is not ashamed of who he is. He manages to harness his power and escape. By season 3 he is able to change back and forth at will and describes it as “pretty awesome”. He tries to convince others of his kind that they should not have to hide and that their werewolf side is part of who they are. By this point he has stopped taking the medication as he has come to believe that "it's no answer."[11]

Henry is close to Rachel and her husband Gerald, abnormal researchers with whom he has worked together for a number of years. He describes Gerald as being like a brother to him, and believed he was helping Rachel and her marriage by being a friend, "someone she could count on". However, they grew closer than intended and Rachel had fallen in love with Henry, only marrying Gerald because he was the one who asked. Gerald had picked up on his wife's infatuation and attempted to kill Henry by drugging the Pleskidara Jack. When this plan backfired and Rachel was the one to nearly die instead, he attacked Henry with a knife to force him to transform. He intended for the werewolf Henry to kill him so he wouldn't have to live without his wife, while Henry would have to live with having killed one of his closest friends. But when Rachel crashes Gerald is distracted and captured by Bigfoot. Without the threat of the knife Henry manages to quell his transformation. Rachel recovers, but Henry tells her they can't be together.[7]

For a long time Henry believed he was the only one of his kind, "the beginning and ending of [his] line." While there sometimes are other werewolf sightings, they never turn out as such. When investigating another such sighting in the English town Oldham together with Dr. Will Zimmerman, they come across a private psychiatric clinic. Henry is admitted as a patient in an attempt to investigate and discovers that all other patients are werewolves as well. He succeeds in convincing the inmates that they can live amongst society and don’t have to fear the transformation. He begins a romantic relationship with one of the heads of the institute, Erika Myers.[11]

Henry and Erika keep a long-distance relationship for a while,[14] until Erika visits Old City. Henry proposes to her, while at the same time Erika asks him to come live with her in London. They realize neither is willing to give up their life for one another and go their separate ways.[15] Some time later, Erika visits the Old City Sanctuary again to tell Henry she is pregnant with his child. Due to complications, Magnus slows down the gestation period (from around 10 months to possible 22 months) to ensure the safety of both Erika and the fetus, meaning that Henry will be a father sometime within in the next year & a half. Helen tells him he will have some serious decisions to make come that time, possibly leaving the Sanctuary.[16] When Henry creates a video log for his future child while testing the FOSSS vest in Episode 4x11 - "The Depths", he announces the names that he & Erika have picked out. They decided upon naming their child after their late HAP friend Alistair if it was a boy and Alice if the child was a girl. Henry also announces that their child will be raised in England and is excited by the future prospects that his kid will actually have a cricket bat and an accent.

Alternate Realities

Guardian's Timeline

In the alternate timeline created by the Guardian, Henry created weapons for the government to use against the infected until it fell.[17] He's among the many who died; from the postmortem photo found by Helen Magnus it appears he was shot in the head after he became infected.[18]


Dr. Helen Magnus
Magnus found Henry on the Moors as a child and took him with her to the Old City Sanctuary, where she raised him together with her biological daughter Ashley. Helen became a mother figure to Henry and she in turn feels very maternal towards him, though they also share a genuine kinship and a friendship that "goes beyond the boundaries of mother and son".[19]
Henry grew up with Bigfoot in the Sanctuary, and the two are very close. Their relationship can be characterized as father and son.[20][21]


Erika Myers
Henry became involved with Erika shortly after meeting her and her clan, the first other werewolves he ever knew.[11] They had a long distance relationship for some time, and when she came to visit him in Old City, he decided to propose to her, against Will's advice. It turned out Erika was unwilling to move to Old City, just as he did not want to go to London.[15] Several months later, she visited the Sanctuary again to tell Henry she is pregnant.[16]


  • Ryan Robbins previously made an appearance on the television series 'Wolf Lake', which was centered around werewolves.
  • Henry is absent in the Episode 2x08 - "Next Tuesday" because he is surfing in Tasmania; Bigfoot is with him.
  • In Episode 2x10 - "Sleepers", they are missing because they are attending the San Diego Comic-Con.
  • He speaks some sign language. [7]
  • He is a four time claw crane state champion.[22]
  • Even though the gender of Erika & Henry's unborn child is not revealed to them or any other character on-screen in the show, it is revealed to the audience off-screen in the Sanctuary Season 4 dvd audio commentary for a later Episode 4x11 - "The Depths" by Amanda Tapping & Gillian Horvath (minute mark start 28:17). The child is to be a girl, and will grow up as human first until most likely puberty before being able to shift into her HAP form.


In the original Sanctuary webisodes, Henry's character is quite different from the one in the TV series. His origin is explained as being a descendant of Gregory Magnus's original weaponsmith back in London. When asked by Dr. Will Zimmerman whether he is an Abnormal or not, Henry answers he is "a normal, boring homo sapien".[23] He is responsible for weapons and tech support, among others things, and refers to himself as being "just an employee".[24]



  1. As of his 2011 birthday sometime during Season 4; Based on Ryan Robbins birth year of 1972.
  2. Henry was found in the Moors of Great Britain by Magnus and raised by her in Old City.
  3. Official character biography on SanctuaryForAll.com
  4. 4.0 4.1 4.2 Episode 1x08 - "Edward"
  5. Steinberg, Jamie. (2011). Interview with Amanda Tapping and Robin Dunne. Starry Constellation Magazine
  6. Ryan Robbins: "He's very close to Bigfoot. There's a bit of a father figure there for Henry." Sanctuary season 1 DVD extras: the Sanctuary residents.
  7. 7.0 7.1 7.2 7.3 Episode 2x06 - "Fragments"
  8. Official character biography on SanctuaryForAll.com
  9. Ryan Robbins: “Henry Foss is the pulse of the Sanctuary, the heartbeat of the Sanctuary. Everything from designing and building weapons to unclogging plumbing disasters.” Sanctuary season 1 DVD extras: the Sanctuary residents.
  10. Episode 1x13 - "Revelations, Part II"
  11. 11.0 11.1 11.2 11.3 11.4 Episode 3x06 - "Animus"
  12. Ryan Robbins: “Henry himself has his own deep dark secret, that nobody really knows except for Magnus and Bigfoot.” Sanctuary season 1 DVD extras: the Sanctuary residents
  13. 13.0 13.1 13.2 Episode 1x07 - "The Five"
  14. Episode 3x07 - "Breach"
  15. 15.0 15.1 Episode 3x15 - "Wingman"
  16. 16.0 16.1 Episode 4x03 - "Untouchable"
  17. Episode 2x05 - "Pavor Nocturnus"
  18. Screencap of Pavor Nocturnus
  19. Steinberg, Jamie. (2011). Interview with Amanda Tapping and Robin Dunne. Starry Constellation Magazine
  20. Ryan Robbins: "He's very close to Bigfoot. There's a bit of a father figure there for Henry." Sanctuary season 1 DVD extras -- the Sanctuary residents.
  21. Ryan Robbins: "Bigfoot and Henry have a very lovely father-son type of relationship." InnerSpace Special- Behind the Scenes: Sanctuary Season 2 Pt. 2 of 3
  22. Episode 1x12 - "Revelations, Part I"
  23. Episode 0x07 - "Webisode 7"
  24. Episode 0x08 - "Webisode 8"
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