AC-498

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”AC-498 Is a large gelatinous creaeure, measuring to around 25 cubic meters. However, this size may change periodically. It is unknown what AC-498 is comprised of, but his body matter is completely solid white. It has been reported that he has a sphere-shaped core within his body that glows a bright-orange, but there is no photographic evidence for it. AC-498 moves around by extending his body mass outwards and using it to pull himself in a direction, in a similar method that a amoeba moves using pseudopodia. His intentions are currently unclear, but it seems it’s current goal is advancing towards monsters.” -Notes on AC-498 from the Royal Scientist, Dr. W.D. Gaster.

Appearance
AC-498 is a large mass of unknown white slime. Contained within the slime are small air bubbles, which can be popped from the outside easily by applying pressure to the area the air bubbles are located at. While not clearly visible from the outside, if one either was able to delve far enough into the slime or cause AC-498 to stretch their slime to the point that it was able to be seen, then a bright-orange, glowing core would be revealed.

Personality
AC-498 has the inability to perceive or express emotions. In fact, the only desire that AC-498 has is the desire to pursue any nearby monsters, attempting to make contact. Due to this, AC-498 has an unending desire for new knowledge. This can lead to it being a destructive force against the underground if it were to obtain the powers and memories of an able fighter like Undyne or Asgore.

Research Notes
“During one of my experiments, I accidentally created some new creature. It’s made of a solid-white gelatinous substance. I have run tests on what said substance is, and all results have come blank. This must be some kind of new, undiscovered substance… I will have to do tests on this subject. I will give it the Code AC-498.”

“Today, I allowed subject AC-498 to roam freely in a confined, 400 cubic meter room. The way the subject move was in a similar motion to that of amoebas, extending it’s gelatinous body outwards to create pseudopodia, pulling themselves forward. For most of the time during the experiment, it simply wandered randomly. It did not react to any sounds created, any contact with the body or any odors wafting into the room. However, when a test subject was sent into the room, AC-498 immediately began moving towards the subject. No contact was made with AC-498 as of yet.”

“A test subject made contact with AC-498 today. The subject reported the contacted area to have a tingling sensation. Once retracted from AC-498’s contact, there was a thin layer of dust on the top of the contacted areas. I theorize that AC-498 starts to dissolve areas on a monster that makes contact with AC-498. However, I have no other substantial proof to back this theory… This will require more experiments.”

“AC-498 formed into an figure that is nearly identical to that of the previous test subject. It seemed to have the memories and intellect of the person he was imitating, being able to recall information only the test subject would know. The only difference between the two was the presence of numerous scars on his torso and arm. I would have to theorize that this is excessive body mass that was not needed to form the image, but was needed to be kept somewhere. Therefore, AC-498 created empty pockets to hold this excessive body mass. Upon surgically opening AC-498, 2 things were made clear. The first of which is that AC-498 has internal organs that function the same and are in every way identical to that of the test subject. The second is that, while copying the memories of the test subject, AC-498 does not have similar emotions to that of the test subject. Not only did it experience no sensations of pain during the surgical opening, but it has shown to show no emotions what so ever.”

“AC-498 has reverted to their original form. It has been shown to still contain the prior knowledge of the test subject. While it can occasionally morph into the shape of the test subject, it is most commonly that AC-498 will be seen in their original form.”

“AC-498 has escaped their containment area, and is currently roaming the facility, disguised as the test subject. I am currently having the entire facility evacuated. However, I have a horrible feeling that… It may have already left the facility. If this is true, then I must send out a warning to the entire underground. I have no idea the true potential this creature contains… It must be stopped before it is too late.”

End of Notes.

Trivia

 * AC-498 was based off of the X parasite from the Metroid series.

Credit
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Gallery
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