Seether tentacles do not exist in a single location on a bal’kar but rather make up a majority of a bal’kar’s body. These special tentacles serve a large number of functions within a bal’kar, acting as a bal’kar’s muscle and flesh, even specializing into weavers or spiral sacs.
These special tentacles do not have one specific location on a bal’kar’s body, but rather they make up around 90% of a bal’kar’s total mass, with the other 10% consisting of the bal’kar’s skeletal bone structure and internal organs. When exposed, the seethers appear as bright green, thin, worm-like tentacles and are typically only visible when the bal'kar is injured, integrating a victim into their body or seen emerging from the abdomen or breeder when stimulated.
Seethers are highly adaptable and are capable of taking on many shapes and forms to suit the various functions within a bal’kar’s body. Internally, seethers will lock together, their head and tail flanges opening up into hundreds of smaller strands which then twist and weave together to form long fibers. These fibers, in turn, then twist together, much like a rope, to form the muscular system of the entire bal’kar. Seethers nearest the surface of the bal’kar’s body flatten and fuse to form the bal’kar’s skin, turning black in the process. Throughout the entirety of a bal’kar’s body, seethers amass and cluster to give the bal’kar its unique shape.
It is important to note that a bal’kar’s body is, in essence, a mass of seether tentacles overtop a basic skeleton filled with bio extract. Every seether in their body working in unison with the others to form the bal’kar’s body, limbs and tentacles. It is through this unique clustering that gives every bal’kar tentacle their unparalleled strength and flexibility, with every seether capable of stretching or compressing up to 100 times.
Because the seethers make up such a large portion of the bal’kar’s body, they play a pivotal role in many facets of a bal’kar’s existence. Seethers act as the bal’kar’s skin, muscles, living tissue and nervous system, and are responsible for or a key part of many of the bal’kar’s abilities everywhere from transformation and merging to healing and regrowth.
- Main article: Disguise Form
When a creature becomes a bal’kar, its original DNA is imprinted, encoded and stored within its new bal’kar DNA. The seether tentacles are capable reading this imprinted DNA and can manifest any of the physical traits, such as fur, scales, body shape or color patterns that are stored within. When you couple this ability with the highly elastic nature of the seethers, it allows the bal’kar to revert back to any form it once had. It is important to note that these changes are superficial in nature. While a seether mimicking fur would look like fur, feel like fur and behave like fur, it is still a seether; under the surface of this façade the bal’kar’s body remains a mass of highly compressed seethers.
During the transformation process back into their disguise form, Seethers in the bal’kar’s various tentacles simply retreat back into the body, causing the entire tentacle to merge into the bal’kar’s body. Limbs such as hands, feet and tails reform as the seethers reconfigure and mimic these appendages. While a bal’kar’s seethers can compress the bal’kar’s entire body into this smaller shape, their physical mass does not change. The result of this means that, while a bal’kar can appear as their former self, they still weigh a massive 1500 kilograms (3300 pounds) and must be cautious of this fact.
- Main article: Integration
During the integration process, in which a living creature is fused to the bal’kar’s body (as a feeder tentacle), seethers play an important role. Burrowing into the victim’s flesh, the seethers rapidly convert the tissue of the creature into seethers as they bind the victim’s body to the bal’kar.
- Main article: Regeneration
Should the bal’kar sustain an injury, regardless of the method: be it a laceration, trauma, amputation, burning or even freezing, the seethers react quickly to heal the wound. Damaged seethers are broken down and recycled back into the bal’kar’s body as bio extract while new and heathy seethers take their place and function. Because of this, a bal’kar is able to return to its normal shape even if badly disfigured due to injury. Any foreign debris within the bal’kar’s body is pushed to the surface by the constant motion and contraction of the seethers before the wound is sealed.
Plasma poses a serious threat to the bal’kar, which is why most anti-bal’kar weaponry focus on utilizing plasma. When a seether is damaged or destroyed by plasma, the ionization of the plasma interferes with the mechanisms that trigger seether regeneration and severely hamper a bal’kar’s ability to regenerate. While plasma does not prevent regeneration, it simply slows the process until the affected seethers can be recycled. (For more information on how plasma affects bal’kar see weaknesses: plasma).
Should a bal’kar’s limb be severed or part of their body blow off, the seethers in the affected limb will react immediately by detaching from one another, causing the limb to dissolve into a mass of seethers. Any undamaged seethers will then immediately attempt to crawl their way back the bal’kar, latching onto any damage seethers they can along the way, where they are reabsorbed.
Meanwhile the seethers at the site of the injury will respond by reforming the limb, creating new muscle and flesh out of what seethers remain. This can give the bal’kar the appearance of fast limb regeneration, when in reality it is due to the highly adaptable nature of the seether’s themselves. Some limbs, such as the controller tentacles require specialized cells to be produced, this results in a considerably slowed re-growth process.
- Main article: Weaver Tentacles
Seethers are critical in the construction of hive structures. When a bal’kar wishes to create hive structures, seethers are extruded through the spreaders and form tiny web-like strands called weavers.
- Main article: Merging
When two or more bal’kar wish to fuse together through, the process known as merging, they begin the process by having their seethers unravel. As the two bal’kar bodies press together, the unraveled seethers slip past one another before locking once again. In this way, the two seethers of the two bal’kar link together, allowing them to fuse into a single bal’kar. As all bal’kar share the same genetic code across the entire hive, there is no risk of rejection during the merging process.
The process of merging is an extremely intense and incredibly pleasurable one, as each seether contains a cluster of nerve endings. These nerve endings allow the bal’kar to feel each and every seether as they slip past one another stimulating the pleasure centers of their brains in the process.
Recreationally the seethers can be used in multiple ways during mating.
- Main article: Abdomen
During a mating session it is not uncommon for seethers to erupt out of a bal’kar’s anus, located at the end of their abdomen. This is especially common when two bal’kar lock abdomens with their grapplers. The result of which causes the seethers of each bal’kar to coil and bond together deep within each other’s abdomen, locking them together tightly. Once locked, the seethers pull upon each other and eventually begin to flow back and forth between the two abdomens. This allows strands of lust to be passed between the bal’kar at real time, allowing them to directly share thoughts, emotions and experiences, enhancing their pleasure and tightening the bond between them.
It is possible at during the mating process, the slurper of one bal’kar will find its way deep inside the other. Here the slurper will sometimes begin to suckle at the insides of the other bal’kar in an attempt to find a seether that either isn’t bonded properly or has an exposed end. Should the slurper find one such seether, it proceeds to suck on it in an attempt to slurp it up like a piece of spaghetti ripping it out of the other bal’kar’s body. As it gets pulled from the body, the victim seether will usually then attempt to grab onto one of its neighbours in an attempt to prevent itself from being sucked up. This ends in one of two ways, either the seether is successful in holding on and the slurper gives up, moving on to find another seether or, more commonly, the seether is unable to hold on and gets sucked up the slurper. When the later happens it often exposes its neighbours to the same fate. Because of the multitude of nerve endings in the seethers, a bal’kar whose seethers is being sucked up experiences an intense pleasure both as they feel their seether slide up the urethra of their partner’s slurper and as the seethers deep inside them unravel as they get sucked up one at a time like noodles.
- Main article: Spiral Sac
During the breeding process with two bal’kar, a seether from each bal’kar can emerge from within the breeder and permanently fuse together to form a spiral sac. This sac quickly fills with bio extract and can be detached from the two bal’kar.