{{Headcrab Infobox
| image=FileGonome mdl.jpg|250px
| name=Gonome
| affiliation=Xen wildlife
| type=Mutant Zombie
| health=
| weapons=*Claw swipe
*Gut throw
*Chest bite
| entity=monster_gonome
| designer=
| hidei=
| hidep=
| hideg=
{{Quote|Can you imagine what the next stage of mutation looks like?|Black Mesa scientist|Half-Life Opposing Force}}

The '''Gonome ''' is the "mature" form of the Standard Zombie|Standard Headcrab Zombie.

It only appears in ''Half-Life Opposing Force''.

While the precise reasons for the transformation are unknown, it appears that if a headcrab and its host survive for an unspecified period of time or are subjected to certain conditions, the Zombie will develop into a Gonome. The host experiences a growth in overall body mass, and the gash in the chest cavity develops into a functional, vertical maw. The Gonome also obtains the ability to spew organic projectiles from this maw.

While the host body appears to grow dramatically, the headcrab controlling the host appears to wither or deflate; the outlines of the host skull's eye sockets and nose are visible through the headcrab's skin.

Gonomes generally stay with groups of lesser zombies and Headcrabs. If they observe any threat, they will first use their ranged attack. Should the enemy get closer, they will resort to manually attacking with their claws. They can sprint if they spot a distant target. In many ways, the Gonome's behavior is similar to that of a Bullsquid.

Near the beginning of ''Opposing Force'' where Adrian Shephard finds his PCV on a table near some headcrab-controlled bodies, two scientists talk about headcrabs, saying they can take over the host's nervous system like a parasite, and one of them asks the player, "Can you imagine what the next stage of mutation looks like?".

== Behind the scenes ==

Being an expansion, ''Opposing Force'' briefly demonstrates the continued mutations of a zombie. Various model designs were made by Gearbox in planning the zombie models.

It should also be noted that the frequent zombies of Marines and Security Guards were also created only by Gearbox. It could be assumed that Gonomes are only critically mutated scientists, since they're only depicted with plain white scientist pants as seen in the standard-definition models.


*The Gonome model has an unseen dancing animation named "veryhappy" in the original model, while it is "sohappy" in the Steam version. It was reused for the scientist model under the name "sohappy" in the original model, and "hambone" in the Steam version, for a scientist seen dancing through a security camera at the start of ''Blue Shift''.

*On Easy mode, it is possible to kill a Gonome with a single shot with the Desert Eagle when aiming for the head.

*In ''Half-Life 2'', no Gonomes are seen in Ravenholm, despite the fact that the Humans there were transformed into Zombies a fairly long time before the beginning of the game's events, evident by the fact that Father Grigori had clearly been setting up traps and living alone for a long time.

*It's possible that the Gonome could have been in its zombie state long before the Resonance Cascade because of Xen being studied back then. It could be because of the headcrab escaping the labs and capturing an unlucky scientist.


FileGonome.jpg|A Gonome in Black Mesa. Note the outline of eye sockets on the Headcrab.
FileMissing In Action3.jpg|Dead Gonome.
FileOf2a1b0001.jpg|The Gonome and other Standard Zombie|zombie in an abandoned location.
Gonome_sprint.jpg|The Gonome sprints, arms outstretched.

==List of appearances==
*''Half-Life Opposing Force'' {{1st}}

CategoryHalf-Life Opposing Force