Jack Slash
<infobox> <title source="name"><default>Jack Slash</default></title>
<image source="Image"></image> <image source="image"></image> <group><header>Basic Information</header> <label>Civilian Name</label> <label>Aliases</label> <label>Gender</label><default>Unknown</default> <label>Death</label> <label>Age</label><default>Unknown</default> <label>Post-timeskip</label> <label>Ward start</label> <label>Relations</label> <label>Family</label></group> <group><header>Professional Status</header> <label>Occupation</label> <label>Classification</label> <label>Unique Features</label> <label>Alignment</label>
<label>Status</label><format><label>Location</label> <label>Teams</label> <label>Previous Team(s)</label> <label>Base of Operations</label></group> <group><header>First Appearance</header> <label>Worm Debut</label> <label>Ward Debut</label></group> </infobox> Jacob, better known as Jack Slash, is the leader of the Slaughterhouse Nine.
Background
Jacob was a young trigger. His parents were a little mentally unbalanced, and they shut him inside a bomb shelter with a radio link to his father, who wanted to use it to instill Jacob with sufficient fear of the threats of the outside world. A one-way communication, feeding into and playing off his fears, gaslighting, convincing him a war was underway, it broke the boy, but he wasn't released when he was broken. He stayed. His parents left him in there, mostly because it was easier. In a twisted way, having a boy in the shelter to hear dad's words, it made Jacob the exact son they wanted.
He triggered on exit, his entire reality challenged on seeing that the world was fine<ref>Comment by Wildbow on Spacebattles</ref>.
At some point during or before 1987, Jack encountered King and joined him to become one of the founding members of the Slaughterhouse Nine. He felt great displeasure at King's interest in grooming him to be his new pet project, his new "Gray Boy", and conspired with Harbinger to kill him. After they successfully murdered King, Harbinger left due to perceived differences in their methods and Jacob took over the Slaughterhouse Nine while renaming himself "Jack Slash" with the specific intention of sounding harmlessly simple and absurd.
Under Jack's leadership the Nine become synonymous with terror and death, caring nothing for political power or money. They seemed unstoppable, hitting towns seemingly at random(unknowingly aided by Jack's passenger) and killed as many as they could before leaving. They notably avoided using bombs and more traditional methods of mass destruction, opting to kill personally using their powers.
The recruitment process became a trial, each existing member of the Nine would torture and attempt to kill recruits, survival meant being accepted as a new member.
Personality
Manipulative, cunning and dangerous. Jack took great pleasure in changing the world around him for the worse, treating the destruction he spread with the nine as a game. Upon hearing that his actions would end the world he decided that he liked the idea.
He had a love of theatrics, deciding to let Theo Anders live for a year to trigger and kill him when he declared that he would kill him if he had the power, simply because he liked the idea of a grand confrontation between the two.
He also enjoyed the facade of the Slaughterhouse Nine as a family, with Bonesaw encouraged to keep up a cutesy child act to be the baby of the family, with Jack himself as the "daddy".
Weaver described his fighting style thus: “He doesn’t really fight, unless he’s got his people around him and the fight’s unfair. Mostly, I was chasing him around, trying not to get killed in the process.”<ref name="25.2" Scarab 25.2</ref>
Appearance
Jacob is tall and slender, occasionally wearing open button-down shirts to show off a torso that hasn't a trace of fat.
He has an attractive face with pale blue eyes, explicitly compared in story to Johnny Depp.
He keeps his beard neatly trimmed in a goatee fashion with a sawtooth edge, and has started to show the first signs of aging, with wrinkles forming around his eyes and grey hairs cropping up.
Abilities and Powers
Jack's power is a "space warping effect, so any blades he’s holding have an edge that extends a horrendously long distance, all with the optimal force behind the swing."<ref name="10.6">Parasite 10.6</ref> It probably wouldn't function on Armsmaster's nanothorn blades, because the blade isn’t what has the disintegration effect<ref>Comment by Wildbow on Interlude 11d</ref>.
He can also sense and communicate on a limited level with other people's passengers, letting him know when and how they're about to attack and how to manipulate other parahumans. This makes him far more challenging to fight than his more obvious ability suggests,and has made him practically invincible for thirty years. It is suggested that this power is so subtle that he doesn't even know it exists[citation needed].
According to Scion, his power is the result of receiving the weakened "broadcast" shard that allowed communication between the Entities, which grants him both his blade-projection powers and his instinctive Thinker ability.
History
Jack and the rest of the Nine arrived in Brockton Bay a couple of weeks after Leviathan's attack, looking to recruit new members (selected candidates included Echidna (pre codename), Regent, Armsmaster, Panacea, Oni Lee, and Bitch). During this time, they laid low, killing only a few civilians.
After being informed of the Nine's presence by Coil, Dinah Alcott made a prophecy that if Jack Slash was not killed before he left Brockton Bay he would set into motion the end of the world.
Jack tracks down Oni Lee and offers him a chance to join the Nine. When Lee refuses, the two fight, and Jack grievously injures Lee. He takes the wounded man to the Anders apartment and breaks in, dumping Lee in the bathtub and confronting Theo Anders. He tells Theo that he will kill him and Aster as soon as Purity returns home. During the subsequent conversation, Theo convinces Jack to spare them by promising that he will become a great hero and stop him. Purity then returns from grocery shopping to find him and is about to attack him, but Jack deduces that her powers have been weakened by recent cloudy weather and overuse, and taunts her by telling her that she has little chance of defeating him should they fight. She reluctantly allows him to leave, and he takes Oni Lee with him, later giving him to Bonesaw.
References:
<references/>