Xenomorph King

Species

• Xenomorph XX121 

Height

• Varies

Skin Color

• Black/blueish-green

Distinctions

• Immense size
• Ornate head crest
• Tusks
• Pincer-tipped tail
• Tail-like dorsal spines

The King, also known as the Monstrosity, is a large and rare form of the Xenomorph XX121 species, that are only known to exist in the largest of Xenomorph hives. They are very similar to the Xenomorph Queen caste but are much more built for combat than the egg-laying Queen.
While known as a counterpart of the Xenomorph Queen, the exact role of the King is unknown. As Xenomorph Ovomorph - Egg do not need to be fertilized, it is unlikely to be a reproductive caste. Most evidence would seem to point to the King being a commander caste like a Xenomorph Praetorian that would act as a hulking field commander for the lesser castes. It is unknown how a King is created and why they only exist in the largest Xenomorph hives.
Characteristics
Much like its Xenomorph Queen counterpart, the King possesses a large head crest, which is much more ornate than the Queen's. Parallel to its jaws, a pair of tusk-like protrusions jut out of its crest, though they seem too small to be used offensively. The King is also much more rigid and bulkier looking than his "female" counterpart. Another difference is the lack of ventral arms that Queens have.
Much like several other castes of Xenomorphs, the King is capable of spitting acid, which is known to be extremely corrosive. It possesses large talon-like claws and a powerful tail which allow it to tear through even the armor of tanks. Its tail possesses rows of spines similar to the scutes of a crocodile instead of the single row of most Xenomorphs. The King also possesses two barb-tipped tail-like structures on either side of its four dorsal spines. Its regular dorsal spines possess a shape similar to most normal Xenomorphs, and not the spike-shaped spines of the Xenomorph Queen and other related castes.
The King ranges in height from slightly taller than a Xenomorph Queen to towering several stories over its smaller brethren. It has been noted that the King possesses enhanced regenerative abilities, specifically linked to the consumption of its enemies. It is also said to be fairly mobile and fast moving for something of its size.