"We need to shut it down and destroy the host."
"You can't do that! It's thousands of years old, pre-dating the pyramids! We haven't even scratched the surface of the benefits."
Phil Coulson and Dr. Goodman[src]

The G.H. or Guest Host was a Kree whose corpse was used by Project T.A.H.I.T.I. to synthesize drugs from his bodily fluids for the purpose of bringing people back to life, particularly fallen Avengers.


Long ago, the Kree came to Earth, as part of a project to genetically alter humans to create physically enhanced soldiers to fight their wars. Although they employed the same process on many worlds, only human experiments showed significant results. However, this fact was never revealed to the Kree empire and the entire project was eventually abandoned.[1]

GH - Shadows

G.H. at the HYDRA Research Facility in 1945.

This Kree was found by German forces and taken by HYDRA to a stronghold amongst various other objects of Kree origin, including the Diviner. In 1945, HYDRA was defeated and the corpse was confiscated by the Strategic Scientific Reserve. It remained in their custody until the formation of S.H.I.E.L.D., when it fell into their possession.[2]

The bodily fluids of the Kree, named the Guest Host (or G.H.) were later found to have highly potent regenerative capabilities, and, under the orders of Nick Fury, the corpse was relocated to the Guest House, a former World War II bunker. Its bodily fluids were harvested and used to create formulas like the GH.325, as part of Project T.A.H.I.T.I., with the prime intention being to ensure the continued survival of the Avengers in case any member of the team were to perish.[3]

Coulson discovering GH

G.H. inside the Guest House

Agent Phil Coulson was charged with heading the operation, but after the formulas that were harvested from the G.H.'s body proved to be dangerous to the participants, the project was shut down. It was almost immediately reinstated after Coulson was killed by Loki, and Fury had Coulson undergo a procedure that saw the GH.325 resurrecting him. However, Coulson's mind was erased to ensure he would not remember the traumatic procedure, and as a result forgot completely about his involvement with Project T.A.H.I.T.I.

Coulson later rediscovered the Guest House while attempting to use the GH.325 to revive Skye. Inside, he found the G.H. corpse being preserved in a stasis pod, and was left clearly disturbed by the discovery.

GH Cables

The body fluids of G.H.

The specimen was apparently destroyed when the bunker was blown up by the auto-destruction activated while Coulson's Team infiltrated the Guest House to retrieve the GH.325 and use it to save Skye.[4]

When Sif came from Asgard chasing Lorelei, Coulson hoped that she could help him to identify what species the G.H. specimen was; however, after naming different blue-colored extraterrestrial races, she stated that none of them had visited Earth.[5] This turned out to be false: after Raina and Skye are turned Inhuman, a Kree operative targeted them. He revealed that millions of years ago, a Kree project was established to genetically alter species on different worlds to fight Kree wars. The project did not yield any result on many species and was shut down. It was however successful on humans, but this was never revealed to the Kree Empire.[1]


The G.H. is a Kree with the Words of Creation marked on its chest.[6] It has lost the lower half of its body, making some of its organs visible, missing its eyes and part of its mouth, exposing some of its teeth. According to Dr. Goodman, the corpse predated the Pyramids of Giza.[7]


G.H. possessed all of the various superhuman attributes common among his people, such as superhuman strength and an efficient healing factor.

  • Kree Physiology: As a Kree, G.H. had the following superhuman abilities.
    • Superhuman Strength: As a Kree, G.H. had possessed a higher strength level than that of a human.
    • Superhuman Durability: As a Kree, G.H. had the ability to withstand more injuries than that of a human being. After death, its body stayed in the same condition for decades without being damaged.
    • Superhuman Agility: As a Kree, G.H. had incredible agility that is well beyond that of a human.
    • Regenerative Healing Factor: As a Kree, G.H. had a regenerative healing factor. After his death, his body was used multiple times to heal and resurrect S.H.I.E.L.D. agents.


In chronological order:


Transparent AOU Logo
The Marvel Cinematic Universe wiki has a collection of images and media related to G.H..