|Cause of Death||Smothered|
|Killed by||Anne Sampas|
|Family||Anne Sampas (wife, deceased)|
|Played by||Scott Morgan|
He attended the fundraiser for the astronauts with his wife and their friends. On the last night of the ten-day quarantine the astronauts were subjected to after their return from Mars, he is seen having sex with Anne until she instantly becomes impregnated, which results in a tube-like creature ripping out of her womb and kills him by latching onto his face and suffocating him to death as he is lifted off his feet and against the wall behind him.
When Preston Lennox and Laura Baker arrive to stop the creature and fail to save him and his wife, Preston shoots the creature off of Harry's face and he falls to the floor, dead with the remnants of the tube creature still latched to his face.
- Out of the three astronauts' associates, he is the only one married to one of them.
- The creature that kills him bears a striking resemblance to the Facehugger.
- "I missed you so much"
- "Not as beautiful as you are"
- "God, I missed making love with you"