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thecruxarm.bsky.social
Alien Person
@thecruxarm.bsky.social
120 followers 45 following 38 posts
Hi! This is my main account where I'll be posting art and other content relating to my speculative biology project, and maybe some others. You can find me on Instagram and Tumblr under the same handle!
Second art account: @thecruxarm2
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thecruxarm.bsky.social
‼️NEW ALIEN INCOMING!‼️

The Yiyu: An introduction
(See lore in the comments!)
September 25, 2025 at 3:21 PM
thecruxarm.bsky.social
Introducing the Boueue, yet another of my sophont alien species

‼️MORE INFORMATION IN COMMENTS (because of alt text character limit)‼️
#worldbuilding #specbio #speculativebiology #xenobiology #scfifi #myart #specevo #speculativeevolution #ruminaaantheomachy #alien #aliens
A vertical, floating alien creature not dissimilar to a squid. It has a large, patterned body tipped with a translucent buoyant sac. The lower-body is where the eyes and tentacles are positioned. Their species sigil and name (Boueue) are featured in the upper-right.
July 26, 2025 at 5:49 PM
thecruxarm.bsky.social
Introducing the Scerere! Another in a long line of intelligent alien species I'll be posting about

‼️PLEASE READ THE ALT TEXT FOR MORE INFORMATION‼️
#worldbuilding #specbio #speculativebiology #xenobiology #scfifi #myart #specevo #speculativeevolution #ruminaaantheomachy #alien #aliens
The Scerere are another intelligent alien species to inhabit the region of the Scutum-Centaurus Arm known as Ruminaaan Space. Historically speaking, the Scerere are quite noteworthy, being that they, as well as a buoyant balloon-like species known as the Boueue, are the first two sophont civilizations in Ruminaaan Space to have ever contacted each other in the flesh. When they met several thousand years ago, they formed an alliance called the Syndicate of Civilized Worlds (SCW), a meeting so important that many calendars are based around the date. This alliance, which formed after nearly a whole millennium of foreplay performed between message-carrying probes, stood as a testament to the strength, prosperity and security that came from embracing the unknown rather than fearing it. With time, only more species would join the SCW, but over thousands of years just as many empires rooted, and on numerous occasions even had to fight for, their autonomy and independence from this very faction. Looking at them biologically, the Scerere are even more interesting, bordering on bizarre. Though one may not think upon a first glance, this sophont species have evolved directly from plants, just like the other "animal"-like organisms of their native biosphere, which just goes to show the unpredictability of patterns in life throughout the universe. They do not have ears, but are able to "hear" through vibrations which they pick up through their feet - this, as well as the physical movement of their limbs, are the means through which the Scerere communicate with one another. Although they are able to detect light and basic movement with their eyes, their vision isn't nearly as strong or detailed compared to humans - a feature not uncommon for life on their homeworld as complex visual organs have scarcely emerged in most evolutionary lineages.
July 25, 2025 at 4:11 PM
thecruxarm.bsky.social
Hey, another sophont done! Apologies this one took so long.

These are the Cri, a large aerial intelligent alien. Learn about them in greater detail in the alt text
#specbio #worldbuilding #ruminaaantheomachy #alienpersonspecbio #scifi #specevo #alienpersonworldbuilding #aliens #speculativebiology
The Cri are another sophont species native to Ruminaaan Space. They come from a moon called Rrhu, which has the lowest gravity of any other sophont's homeworld (about 49% that of Earth). Despite the very lax restrictions caused by the gravity, they are very average in size compared to other lifeforms on their world, with a 15.5 meter wingspan which is dwarfed by some animals they evolved alongside. Although hidden in the picture, they possess articulated foldable fingers as well as a retractable pseudo-jaw on the underside of their heads with which they use to manipulate objects. In prehistory, they would ambush prey mid-air using floating forests of balloon-like "trees" as cover. Due to their aerial nature, they have never developed a concept of strict political borders, thus streamlining their progression towards a spacefaring society - the desire to do so in no small part being propogated by their aerial instincts. Despite this, their history is by no means a perfect, linear timeline of progress. They've been spacefaring for over 5,000 years, and for a large period their interstellar colonies would begin to lose contact due to the vast distances between them making it hard to maintain steady flow of resources, communication and diplomatic stability. The fact some members of the Cri would begin evolving into genetically-distinct subspecies did not aid this era of disconnect. Hundreds of worlds would suffer, some reverting to hunter gatherer lifestyles or even extinction. Luckily, the passage of time was their greatest ally, with the majority of these colonies rejoining eventually - however, there are still many stray isolated populations of Cri scattered across space who do not acknowledge their history.
May 22, 2025 at 3:05 PM
thecruxarm.bsky.social
Yet another design made for a contest for Callum Diggle's comic Humanity Lost. Although these designs didn't win, I get to include them in my own project! These are the Fulnera, a now-extinct sophont species of alien. Check alt text for more info
#specbio #speculativebiology #myart #xenobiology
The Fulnera - in their larval stage, they appear like motile fish. They sport tadpole-like tails and a long snout from which their sensory organs and manipulatory appendages emerge. It is these juveniles who once built up their infrastructure and carried out all the active roles in their bygone civilization, alongside tending to the mature adults who dot the landscape of the coasts like trees. The Fulnera - after undergoing metamorphosis, they sprout like plants with a latticed membrane encasing their bodies from which they passively filter feed. Their faces also become leaf-like structures they use to photosynthesise with, and their tall bodies towered out of the water to gain better access to the sun as well as be able to disperse their sperm better.
April 5, 2025 at 9:24 PM
thecruxarm.bsky.social
Here's a concept sketch I made for an alien creature as part of a contest for Humanity Lost, a graphic novel series by Callum Stephen Diggle. I'm so glad to have had my design win and be featured in his comic!
#specbio #speculativebiology #myart #contest #specevo #speculativeevolution
Various conceptual sketches of an alien invertebrate. The animal appears similar to a hobbit worm with a hard exoskeleton, alongside four folded mandible jaws and two small eyes. It sits submerged in the ground, with most of its body wrapped in a long thin cone, and uses a small appendage on its head as a lure to attract small prey animals before ambushing them. Other sketches showcase it being prepared for meals, actively hunting and a more detailed sketch of it's face.
April 5, 2025 at 8:57 PM
thecruxarm.bsky.social
Ok here's an introduction to one of my MANY sophont alien species: the Tuiouli. Due to bluesky's character limit I can't talk about them extensively though😔 so feel free to ask about them!
#specbio #speculativebiologh #scifi #myart #alien #cenobiology #aliens #worldbuilding
The Tuiouli; an alien worm-like creature. They have shiny and smooth spotted skin with two heads (one on each end of their bodies). Each head terminates into five tentacles lined with retractable claws, and there are also five eyes placed between each tentacle. They have two sets of five fins on each end of the body.
January 26, 2025 at 11:54 AM
thecruxarm.bsky.social
Got a new sketchbook so I doodles some original characters who are the protagonists in my setting. These two are Xynthe, a group of sapient AI and machines who gained consciousness millenia after their creators went extinct
#art #myart #worldbuilding #characterdesign #sketch #charactees #doodle
Okula, an alien robot. She is shaped like a prism, levitates using magnetic poles and hydrogen thrusters. She has mechanical arms hidden in her body which she uses to manipulate her surroundings Zeerku, a sapient alien robot. He is essentially a video game console with four long metallic legs and two long metallic arms
December 27, 2024 at 9:12 PM
thecruxarm.bsky.social
Oh boy first post

It's not much but may as well share it. I made a bunch of thumbnails for scenic shots from the homeworld of one of my aliens who evolved on an ice giant planet, like Neptune or Uranus. God knows when I'll make the actual thing though lol

#speculativebiology #art #wip #aliens
None art thumbnails showing basic sketches of cities and industrial settings on a gaseous alien planet from different perspectives
December 7, 2024 at 1:49 PM