Spider Demon (Son)

The Spider Demon (Son) (「」) was a member of the Spider Family.

Appearance
The Son Spider Demon body takes the form of a giant spider possessing a human head, his face similar to the Mother and Older sister demon and has the same facial features of red dots, pure white skin, and short white hair similar to his "younger brother" Rui, with the only difference being that his eyes possess dark red, almost black sclera with deep blue irises and pupils.

Personality
The Son Spider demon is shown to be sadistic and cruel, that in the flashbacks of the Mother Spider Demon he openly taunts and enjoys the physical and verbal abuse she was being put through by Rui and the Spider Demon Father, while sarcastically calling them "Mother" and "Father", showing that he sadistically enjoys playing the part of being in a "family".

History
At one time the Son Spider Demon became a demon and took up refuge in Natagumo Mountain. When Rui came to the mountain he chose the Son Spider Demon to be his older brother, having him modify his own body to fit in.

Natagumo Mountain Arc
As Zenitsu Agatsuma panicked at the sight of various humans in the process of becoming spiders, the Son Spider Demon descended from his house, causing the terrified Demon Slayer to flee. The Son Demon warned the youth that he had already lost, telling him to look at his hand. He noted that the Demon Slayer had been bitten by a spider and poisoned, and would become a spider himself in half an hour's time. Taking out a watch, the Son Demon explained the various effects the poison would have to his opponent, as well as the times they would take place at. Zenitsu freaked out at this knowledge, running and climbing up a tree, for which the Spider Demon both chided and questioned his decisions. He went on to tell the youth that he had nothing to fear, for he would lose his intellect upon transformation, only to be irritated by the boy's terrified, brutally honest comments.

As Zenitsu continued to complain, the Son Demon was bemused, and was similarly confused as the youth fainted and fell out of the tree. However, the Demon Slayer quickly recovered, charging at the Son Demon, who spewed acid-like venom at his aggressor. Zenitsu dodged this attack mid-air, then landed on the ground, while the Spider Demon contemplated this new change in circumstance. He ordered his spider henchmen to attack Zenitsu as the youth prepared another attack, which was dodged, prompting the Son Demon to spew venom at the Demon Slayer again. Although this too was dodged, the Brother Demon confirmed that Zenitsu could only use one technique, prompting him to gloat at his apparent victory. The Spider Demon continued his assault with yet another spewing of venom, this time managing to strike Zenitsu, while his henchmen attacked the weakening youth. He ordered them to envenom the Demon Slayer, which was dodged, but he noted that the overexertion was causing his opponent to vomit blood, which prompted him to label Zenitsu as useless to him. However, the youth prepared to resume his attack, while a surprised Son Demon noted the air was shaking. He retreated back into his house, letting loose another spray of venom, but Zenitsu's enhanced Thunder-Clap Flash technique cut through him, severing his neck. The Son Demon's last moments were of utter disbelief that Zenitsu had defeated him, his body hitting the ground in two parts.

Blood Demon Art
Spider Physiology: Out of every member of his "family", the Son Spider Demon possesses the most spider-like traits, literally harboring legs, an abdomen and a thorax that resembles that of a spider.
 * Poison Manipulation: The Son Spider Demon's spider-like ability is his power to generate and manipulate deadly poison.
 * Spider Conversion - The Son Spider Demon reveals that one of his venom's possesses the ability to convert a human being into a spider like creature, with the only human trait remaining in them being their human heads, turning them into the same spider-human hybrid like himself, completely losing all intelligence and becoming subservient to him. The process of the transformation itself requires at least 30 minutes for the victim to be completely transformed. However, there are antidotes to the venom that can save poisoned victim.

Techniques

 * -|Description=
 * Poison Sputum - A spitting venom attack, that is capable of dissolving what it touches.
 * -|Demonstrations=

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