R-4913 and X-8973 are Vortigaunts from Half-Life: Decay. They appear in the bonus chapter Xen Attacks which can be unlocked if the player manages to obtain an A rank in all of the regular missions.
In the mission, the Nihilanth has assigned R-4913 and X-8973 to retrieve the crystals stolen from Xen by the Black Mesa Science Team (although it is later revealed that the crystals were actually stolen by the G-Man). Both Vortigaunts are able to regain health by damaging objects or enemies, supporting the theory that Vortigaunts can drain lifeforce/energy with their beam attacks.
Trivia[]
- In the unofficial PC port, both Vortigaunts appear with a crowbar when looked at by the other player, while they both use only their claws and electrical attack, as any Vortigaunt. This is likely an unintended glitch.
- In both versions of the game, the words "Valve" and "R-4913" are found in an air duct written all over the walls in the mission Code Green. These words are also found in a vent towards the end of Half-Life: Uplink.
List of appearances[]
- Half-Life: Decay (First appearance)
- Half-Life: Uplink (Non-canon; Mentioned by name; R-4913 only.)
Xen | |
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Creatures | Alien Aircraft • Alien Controller • Alien Grunt • Archer (cut) • Armored Headcrab • Barnacle • Boid • Bullsquid • Charger (cut) • Chumtoad • Fast Headcrab • Fast Walker (cut) • Flocking Floater (cut) • Gargantua• Gonarch • Headcrab • Houndeye • Ichthyosaur • Kingpin (cut) • Leech • Lightning Dog • Mr. Friendly (cut) • Nihilanth • Panther Eye (cut) • Poison Headcrab • Protozoan • Prrobot (cut) • Quiver Creature (cut) • Sand Barnacle (cut) • Snapbug (cut) • Snark • Sphere (cut) • Standard Headcrab • Stukabat (cut) • Tentacle • Unidentified Quiver Creature (cut) • Vortigaunt • Zombie |
Weapons | Black Hole Gun (cut) • Ceiling Turret • Grenade • Hivehand • Sentry Cannon • Snark • Snark Mine |
Technology | Healing Shower • Thumper |
Other | Crystal • Fungus • Healing Pool • Light Stalk • Trampoline • Tree |