Runner

Runners (Internecivus raptus canis) are the one of the smallest alien, on par with the Drone. They act as scouts for the Hive, likely due to their quadrapedal and fast nature. Other names for them are the Dog Alien or the Bambi burster. They are made from a facehugger jumping onto a dog or other quadrupedal species, such as an ox.

Appearance
Runners are tinged a noticeable red and run on four legs like the host they hailed from. However, they will walk and stand on two legs sometimes. On their back, there are no dorsal tubes, likely for better head mobility. Unlike most Aliens, they are digitigrade (i.e. they walk on their toes).

Their chestbursters are not as larval as the other aliens, but rather a smaller, pale version of itself.

Mannerisms and Abilities
The Runner Xenomorph is one of few aliens able to spit acid at its victims, and the only alien able to poison prey and continue damaging long after it has been killed itself. The game AVP:E (Alien versus Predator: Extinction) shows them being able to do this, after upgrading. They also do this in the game Aliens vs Predator (2010) and look exactly like the one from Alien 3. It is unknown what these runners are spawned from, possibly from pets (such as dogs) on Freya's Prospect (a colony in the game) or a dog-like animal native to the planet.

Durability
It is a comparatively weak alien, the weakest of them all and easiest to spot due to its red coloration, which is why it prefers to rush enemies in packs of more runners or other aliens. However, it is still more than capable of ripping humans apart.

Speed
They are an extremely fast and agile strain of aliens, perhaps one of the fastest.

Intelligence
Its intelligence seems to be docked, as it kills prey outright and spares no one (similar to the Ravager Xenomorph) rather than gathering prey for the hive to grow from. They appear at times to stalk their prey or wait for any unfortunate victim to come to them via hiding in a place where a victim won't be able to see them.