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Intelligent Lifeform Index

Four Letter Code YAHV
Federation Status Neutral
Planet of Origin Velan IV
Encountered Romulan Data Files
T/E Rating T0/E0
Current Tech Level N
List of Named Yahvelans

Full ILI GalleryPermitted Species Gallery

"Knowledge can be even more dangerous than a sharp sword."
a Yahvelan saying.
The Yahvelan did not start out as a matriarchal species, however they were forced to become one when they were forced to use extreme measures to stop the constant escalation of military aggression by the males of their species. In the aftermath of this they were invaded and forced to undergo a radical cultural and social change in order to deal with the results of their being invaded and conquered.

Home System

  • Quadrant: Beta
  • Location: Tau Beta Andris Sector (coordinates B27-0002-1300??)
  • Proper Name: Velan
  • Star: It orbits a class M (Red) star
  • Distance from Star: it's orbit is approximately 339 million km
  • Companions: It is the 4th of 9 planets in the system
  • Moons: It has 1 large, 1 medium and 1 small moon.

Home World

  • Proper Name: Velan IV
  • Diameter: 14,428 km (8,965 miles)
  • Gravity: 1.03 standard gravity with a density of 5.0
  • Axial Tilt: 13.4%, with normal seasonal changes
  • Orbital Period: 423 days
  • Rotational Period: 31.1 hours
  • Classification: M
  • Surface Water: 56%
  • Atmosphere: 1.09% is a standard pressure with 74% nitrogen, 26% oxygen, 2% trace chemicals
  • Climate: Mainly a temperate planet with small arctic regions.
  • Terrain: Mostly rolling hills and plains intermixed with mountain ranges and numerous badlands of dense vegetation, cliffs and rough ground.
  • Population: Just over 10 billion on their homeworld but they have another 4 billion scattered over 6 colonies and a number of research or mining facilities.


Their history was one of endless wars. As time went by more and more men became involved in the never ending series of military conflicts. Eventually the only occupation the men concerned themselves with was that of being a warrior and these wars were restricted to certain military zones. Separate but massively large facilities were established on their borders for each different faction. Here the troops would live, train and heal in between battles and wars.

As a result the women gradually had to take over doing each and every single other job and occupation. Their communities were able to grow, develop and expand without the threat of possible damage caused by the constant ongoing hostilities. This peaceful environment allowed the women to develop their natural creativity, intelligence and educational possibilities. Their civilization flourished away from the military zones, great advances were made in all of the sciences as well as engineering and technology. They entered into a carefully controlled industrialization period.

Unfortunately the scale and scope of the wars continued to increase and the women had, had enough. The very real possibility of the hostility extending outside of the military zones became too big of a risk. Fortunately they had advanced to the point where a number of possible solutions were now available to them. After much consideration they decided to use advanced biogenetics. They created a virus that they hoped would eliminate the very strong natural tendency towards aggression among the males. It worked but unfortunately it had the unexpected side effect of activating a passive genetic tendency towards aggression among the women. Fortunately unlike the males the women were intelligent enough to be able to control this new aggressive side of themselves.

Over the next 500 years there were certain unexpected side effects. The males and females progressively changed on a physical level until they looked to be two different species with the men getting shorter, wider and more muscle bound while they became more passive and docile. The females became taller, stronger and if anything even more intelligent as well as competitive and even slightly aggressive. During this period the males slowly gave up the constant fighting and took over doing all the physical, menial, boring, repetitive and dangerous work while the females continued to be doctors, scientists and engineers. The women learned to use physical exercise, sports and athletic competitions as a means of dealing with their new aggressive tendencies.

Eventually all military conflict was eliminated planet wide, a period of peace, tranquility and hopeful, progression marked the new and radical changes to their planetary culture. The women gradually took over the role of leaders, creating policies to encourage scientific and social advancements. Gone was the need for weapons, warriors and peaceful solutions were found to any and all of their social problems. This resulted in a kind of utopia for the women, one where men no longer could endanger the logical and much desired need for safety and protection for all from needless violence.

In 2058 they were invaded by the Ucali. With no standing military and almost no weapons they were quickly conquered. However the invaders considered the males to be no threat and never even considered the possibility that the women might fight back. They were wrong. In a daring and well planned uprising the enemy were defeated and almost wiped out. They never had a chance to send a distress signal and the Yahvelan females immediately started to reverse engineer the captured tech.

Once they understood and in a few cases had improved on the captured tech they started to mass produce their own weapons and ships. When a relief fleet eventually arrived to find out why all contact had been lost with the invaders they were easily defeated and wiped out. However the females had learned a valuable lesson, aggression and illogical warfare was something that they would have to be prepared to deal with, especially as it was now obvious that there were other species in the universe with them and they would and could pose a serious danger to them and their world.

As a result they made a number of changes to their society, altered their system of government and establishing a permanent and highly motivated military force.


They have developed a form of government that many experts would call a military dictatorship. However the Yahvelan get deeply offended if they are accused of being a dictatorship.

As a result of the radical changes their society has undergone every single female in their society has some form of military rank. Advancement is based on performance and ability. As a result the senior ranking female in any given situation is in command and gives the orders.

Most experts believe that due to the unqualified success they enjoyed while defeating the Ucali invaders had a large degree of impact on their adopting a military ranking system for the female population. Not surprisingly none of their males hold any rank with in their government, military or society.

They have formed treaties with a few less advanced species. In return for supplying protection to these other species, they in return supply various resources. These worlds and the few colonies they have started up all fall within their sphere of influence. As a result they call their area of space the Yahvelan Protectorate.


The females are on average about 6’1” to 6’5”. They tend to be slim with very athletic and well-muscled bodies. They have pale blue to aquamarine skin tones and all shades of green eyes. They grow their hair long and tend to braid it into a single braid. Their hair color tends to be darker shades of blue, right up to pure black with a few rare cases of brown hair. They usually wear either casual robes of pastel colors or their military uniform which has knee high boots, a short skirt and reinforced bodice. Their shoulders, arms and upper chests are always bare. Weapons usually include a couple throwing knives, a peculiar sword, energy pistol and a short whip.

The males on the other hand tend to be shorter and more muscle bound. They tend to be 5’6 to 6’. They have thick legs and arms as well as a deep chest and powerful shoulder muscles. Males never wear anything above the waist. Their hair is always cut very short. They usually wear either boots and work resistant pants or boots and a short kilt of gray fabric.


As with most intelligent humanoid species they have a very complex system with specialized organs, and unique hormones, chemicals and enzymes. They are typical humanoids with most of the physical, mental and biological medical problems that seem to plague most humanoids.

On the whole their females tend to be stronger than a human male of their own size and build. They also tend to be more limber with the grace of a trained gymnast and the excellent reflexes and co-ordination most often associated with highly trained athletes.

Their males are almost twice as strong as a human male of the same size and build. They are slower, methodical and lack some maneuverability due to their muscle bound natures.


Females tend to be intelligent, aggressive and goal oriented. Males tend to be submissive and eager to serve. As a species they are fairly stable but both males and females have been known to suddenly lose control and go berserk. Fortunately this is a rare occurrence.


They never developed any form of religion.


Various individuals from their past have earned the right to be remembered for their deeds. Foremost among them is Veluria who was the female who created the virus that altered their world forever.


It is a quasi-military society with the women forming a very definite upper class. As a result they have complete control over both their government and their men who live to serve and please them. The males make up a second lower working class level of their society. Surprisingly the males have very little interaction with the females except to be given new orders, assigned to new tasks or on rare occasions being selected to provide procreation services.


The females enjoy music and a wide variety of art forms, including some acquired from other species. On top of this they enjoy physical activity, not just to stay in shape but for the sheer pleasure of it or the relaxing recreational aspect as well. Many of these have developed into extremely competitive sports.

The males enjoy less sophisticated music, drinking and more combat oriented physical activities like boxing and wrestling. These seem to be hold overs, traditions that have survived from their early days when all of the males were warriors. The women allow them to keep these traditions as they serve a very real and logical purpose, as an outlet for any latent physical aggression and as a means of their maintaining a healthy and appealing physical form.


Males are treated like possessions. They can be traded, bought, sold or as is more often the case won or lost based on the outcome of some physical competition. Very rarely does a female form any kind of attachment to her males, that would be about as logical as forming an emotional attachment to ones shoes. They are there to do the heavy, tedious, menial, dangerous work that is beneath the notice or effort of their betters.


Not as advanced as most Federation member worlds but they are very close and they have a very aggressive R & D system. Many of their more dangerous scientific investigations or research programs are housed off world on barren moons, asteroids or man-made stations.


Fairly self-sufficient but they have been developing a more extensive and long term trade policy. Currently this includes all of the species with in their Protectorate. Strangely enough most reports would seem to indicate that this trade network operates in a fair and fairly corruption free manner with all the members of the Protectorate being treated fairly and equally.


All of their military officers are female and advancement is based on ability, training, skill and intelligence. The men serve in every other military capacity, especially the expendable ones.

Every single spaceship they own is a warship, even their freighters. Currently they have the following types and classes of ships with in their fleet, a heavy cruiser, a light cruiser, a destroyer, a frigate, a gun boat, a large freighter, a small freighter and a scout.

Federation Intelligence Files

While there have been very few meetings with this species by the Federation, this is expected to change now that the Romulan Empire has splintered and broken up.


This is an original species created for the Starbase 118 community by Cmdr. Tel-ar.

This article contains info exclusive to the StarBase 118 Universe

This profile was revised by the Species Development Committee.
REV 239401.31
Please add any new information discovered during the course of a mission or shore leave.