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The Gonarch's body is composed of a smooth dark brown carapace, supported by four arthropod-like legs, and a large fleshy and gelatinous egg sac that dangles from its underbelly. Little is known about how and when the metamorphosis from a Headcrab to a Gonarch takes place, as few Headcrabs ever reach this stage.
Behavior and skills
The Gonarch is almost completely invulnerable to damage, with the large sac that hangs below the thorax being its only vulnerable area. From afar, the creature spews out white globs of harmful chemicals from the top of its carapace to "shoot" at its attacker. At close range, it uses its front legs to swipe at its foe, dealing massive amounts of damage. These attacks can harm and kill any other enemies within range.
When in sight of an intruder, the Gonarch rapidly reproduces baby Headcrabs in large numbers from its sac. The babies are not very dangerous on their own but can swarm at attackers in groups, distracting them from their breeder. If any young Headcrabs are killed, the creature continuously spawns more to take their place.
When it spots the player, melee attacks, takes damage, and dies, the Gonarch produces loud whining cries. It emits low-pitched mournful sounds when a baby Headcrab is killed. Upon death, the Gonarch destructively explodes, destroying any frangible structures in its vicinity. Its explosion, however, does not harm the player or other nearby enemies.
Interestingly, despite its massive size, the Gonarch is capable of walking and running on webbing that covers up pits in two areas of its lair with ease, whereas both the player and other enemies simply fall through them.
Behind the scenes
As stated by Gabe Newell, the Gonarch was created when someone at Valve asked, "Why don't we put a giant testicle on a 20-foot-tall armored spider?"; its gameplay purpose was fit to this design. Strong art direction and clear goals were set for the creature from the start, but the AI proved to be very complicated due to its size and how different it was from the more common game monsters of that time.
According to Ted Backman, the Gonarch was a strongly contested design around Valve's office during the development of Half-Life, considered by some to be too graphic, a fact Backman did not agree with. However, Gabe Newell liked it, which greatly influenced its inclusion in the game. The Gonarch was nicknamed the "Big Momma" or "Big Mama" by Valve. This name can be seen in the game files, with the creature's model and entity being called "
big_mom.mdl" and "
monster_bigmomma" respectively. Its final "Gonarch" name is composed of two combining forms. The definition of the "gon-" prefix refers to the male reproductive organ, and the "-arch" suffix means leader.
List of appearances
- Half-Life (First appearance)