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Proto:Half-Life 2 (Windows)/Alien Enemies

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This is a sub-page of Proto:Half-Life 2 (Windows).

Antlion Soldier

Hl2proto antlion1.png

The Antlion is in the game and behaves exactly like he does in the final game, but has a brown exoskeleton and a darker and less-detailed inner body.

Prototype Final
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Antlion Guard

Hl2proto antlionguard1.png

The Antlion Guard has a brown and dull texture in this prototype.

The Antlion Guard is in the game and fully functioning. However, he is bulletproof to everything except a blast from the Combine Gunship's stomach laser as well as regular to sizable explosions. If killed, he drops a Bugbait to pick up, regardless of the map he is on.

The prototype Antlion Guard has a much better bump map than the one in the final game.

(Source: Pelpix)
Prototype Final
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DirectX 6 Antlion Guard

The prototype contains a low-poly Antlion Guard model meant for a scrapped DirectX 6 mode. Oddly, this version is much closer to the final design than the prototype's model is.

DirectX 6 Antlion Guard Final
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DirectX 6 Antlion Guard Final
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DirectX 6 Antlion Guard Final
Hl2proto antlionguard dx63.png Hl2final antlionguard3.png

Barnacle

The Barnacle is in the game and behaves like he does in the final game. The only difference is that his hitbox is located only around his mouth area, making him much harder to kill than its retail counterpart.

When killed, the Barnacle will vomit out human gibs from the original Half-Life (which must be converted to the v37 model format in order to work properly) instead of human skeleton bits.

Ichthyosaur

Hl2proto icky.png

The Ichthyosaur has extremely barebones AI. He will only attack if the player is near his face. Otherwise, he will do nothing. He can be killed, but he does not turn into a ragdoll.

Of note is that the Ichthyosaur's actual hitbox is only in the creature's body. The rest of him can be swam through with no problems.

Classic Headcrab

Hl2proto classicheadcrab1.png

The Classic Headcrab's model is close to the final's design, but the texture is very different. The coloring appears to be closer to the Headcrab in the Half-Life, with a light body, but brown limbs. He also has blood on him, which the final one lacks.

His health is the same as it is in the final game. His melee attack does 5 damage in Easy difficulty, but 10 in the other difficulties. 10 is the amount of damage he does in the final game, regardless of difficulty.

Prototype Final
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Prototype Final
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Fast Headcrab

Hl2proto fastheadcrab1.png

The Fast Headcrab keeps the same shape, but the texture is completely different. The texture's basic design is the same, but he has a yellow tint and black spots that the final design lacks.

One interesting bit of information gleaned from various resources in the prototype suggests that the Fast Headcrab's design was used as the main headcrab design at one point. The Headcrab used in the Brickbat weapon is an early version of the Fast Headcrab's design, but the model for this weapon does not mention the Fast Headcrab. There is also a model featuring a run-over headcrab that uses the Fast Headcrab's design instead of the Classic Headcrab design. Finally, the Fast Headcrab's model is named "headcrab.mdl", while the Classic Headcrab is called "headcrabclassic.mdl".

His health is 10 in Easy and Normal difficulties (the same health he has in the final game), but 20 in Hard difficulty.

Prototype Final
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Poison Headcrab

Hl2proto poisonheadcrab1.png

Like the other headcrabs, the Poison Headcrab's model is very close to the final design, the major difference being she lacks the hairs the final one has. The texture looks very different, however. She has a brown body color instead of the final's black textures, the legs use a much muddier and darker design that lack the white bands on them, and the spots on it are located on different parts of her body compared to the final design.

Her behavior is slightly different as well; she will only occasionally retreat when her health is low, and she will abandon the retreat behavior if the player gets close to her after she has retreated.

She has 35 health in Easy (the same as it has in the final game), 45 in Medium, and 55 in Hard.

Prototype Final
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Classic Zombie

Hl2proto classiczombie1.png

The Classic Zombie keeps the final's basic design, but has several texture differences. First, the prototype Classic Zombie is wearing a black outfit instead of a white one. The proto design also has a lot less blood on it than the final design does, but has a lot more tears on the outfit instead. He wears khaki pants instead of jeans, like the final one does. When the Classic Headcrab is removed from his body, it's revealed that the Classic Zombie only has a lower jaw for a head, like the Zombine in Half-Life 2: Episode One have.

The Classic Zombie seems to use shortened versions of the screams and cries that the final Classic Zombie uses.

Prototype Final
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Classic Zombie torso and legs

The halves for the split Classic Zombie design use a completely different design than the one the prototype Zombie uses. The split Classic Zombie has a plain white shirt on with blood on it, no mouth-like gaping wound down his chest, like the prototype and final designs do, has a crudely-modeled and drawn red head when the Classic Headcrab is removed, stained khaki pants with a tear on them, exposing a wound, and what appears to be either very poorly-made shoes or socks on. A complete version of this design appears in an early pre-release image and the pre-E3 2003 trailer.

Prototype Classic Zombie torso model Prototype Classic Zombie
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Protoype Classic Zombie torso model Prototype Classic Zombie
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Prototype Classic Zombie torso model Prototype Classic Zombie
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Prototype Classic Zombie torso model Prototype Classic Zombie
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Old Classic Zombie remnants

Remnants of a design based on an older Citizen design (whose textures can be found in the prototype) can also be found. It seems to be limited to the body and Headcrab (which seems to match the Fast Headcrab design instead of the Classic Headcrab design).

Very early Classic Zombie

Another earlier design can be found in the Classic design. This design has the Classic Zombie wearing a tan outfit with a brown armband that somewhat matches the Samuel model in the prototype's files and has a unique head texture that has both the Headcrab and face on one texture, suggesting that the Classic Zombie's Headcrab either used a unique model for the Headcrab or the Headcrab was modeled directly on the Classic Zombie, like the Zombie in Half-Life.

Fast Zombie

Hl2proto fastzombie1.png

The Fast Zombie's design is completely different from the one in the final game. The prototype Fast Zombie's body is still intact instead of having rotted to a skeleton with patches of muscle on it. He is shirtless with brown pants and has white socks on his feet. When the Fast Headcrab is removed, the Fast Zombie's head is a very pink color and look like it was made out of plastic wrap.

The Fast Zombie doesn't appear to be sequenced right. Some of the errors the prototype Fast Zombie has includes not playing his jump animation when leaping (which makes him look like he's hopping with his idle animation) and not playing a roar animation while roaring after a melee combo, despite having these animations.

Prototype Final
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Prototype Final
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Poison Zombie

Hl2proto poisonzombie1.png

The Poison Zombie keeps the basic model shape of the final Poison Zombie, but his skin is purple instead of black and is much less detailed than it is in the final game. His face when the Poison Headcrab is removed is more basic than the one in the final game as well.

His behavior is the same as it is in the final game.

His HP is 175 in Easy and Normal difficulties (the same as it is in the final game), but 210 in Hard.

Note that all of the Poison Headcrabs except the head one have been removed to make it easier to see the Poison Zombie's body. In-game, the prototype Poison Zombie has the same amount of Poison Headcrabs on him as he does in the final game.

Prototype Final
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