Sarah Henderson (Needlemouse)

Not much is known about Sarah's personality when she was alive, but even though she seemed to have a stable friendship with Luther and the Fun Gang, she was stated to have had a habit of walking all over her friends, and it can be assumed from that she was likely inconsiderate, overbearing and somewhat arrogant.

After dying and realizing her friends had covered up her death, Sarah went mad and obsessively swore revenge against her friends for what they did to her. Becoming filled with nothing but animosity and hatred, Sarah would be driven completely insane and go off the deep end, commencing on a killing spree thirty years after her death to finally take revenge against her ex-friends. Sarah feels nothing but hatred for her friends and wishes to plunge them into an endless virtual world for suffer for all eternity, the same way she suffered for the past three decades alone and afraid. Being driven by an indescribable, everlasting, burning rage and hatred towards her friends, although she does occasionally show leniency towards them, likely based on which ones hurt her the most. Regardless, she hates all of her ex-friends and only seeks to torture them for eternity. Her rage is so prevalent that she will go as far as to kill Luther's son just to spite him. It's likely this stems from less than her own death, and more anger at what her death did to her parents, sister, and girlfriend Lily, as she describes to Luther once she kills him and pulls his soul into her digital realm, in addition to offense that they all moved on and had families despite their deed, while her family suffered.

Sarah is also a massive control freak who rules her world with an almost tyrannical fist. Having complete control over the video game world, Sarah developed a god complex and soon came to see herself as the game world's 'god'. While she initially saw her world as merely a void in which to torture her friends, spending over a decade torturing them has lead to further corruption of her already damaged psyche and dwindling mental stability, becoming mad with power, sadistic, callous and psychotic. While Sarah does have the power to move on to the afterlife and can very well do so, she actively chooses to stay in the cursed game because she loves the idea of being in control of her world and its inhabitants, and takes pleasure in entertainment herself with the torture of her friends. Even without her controlling nature and god complex, Sarah is incredibly arrogant, vain and egocentric, viewing herself as above others and looking down on them with a condescending manner, bragging about them being in 'her world'. Sarah is also manipulative and can easily construct a facade of wanting to reconcile with her friends, emotionally manipulating them into believing she forgives them before revealing her true nature and going in for the kill. When she loses control of the situation, Sarah will break down and practically throw a tantrum. At one point, she even attempted to straight-up delete the souls in the game after failing to gain back control over them, showing that she'd rather have her victims completely dead rather than not be able to control them. Even just seeing Luther have a minimal level of control was enough to cause her to throw him to the side and violently glitch in a rage-fueled tantrum.

Despite her actions, it's worth noting that despite being unlikable in life and a monster in death, Sarah was driven to madness due to a tragic, untimely death at a young age caused by a completely unintentional accident, becoming upset and enraged at what happened to her and vowing to get justice.

However, while the circumstances leading to Sarah's death are objectively tragic and sympathetic, it doesn't excuse her actions, especially her actions after getting her revenge, with Luther practically calling her actions way worse than what was done to her. She explains that her crusade was her "doing what was right" and that she was achieving justice against her friends for taking her away from her family, despite doing the same to her victims, even threatening to kill their loved ones unless they confess to their actions. She also killed Kyle and attempted to kill Tom; two innocent people who had nothing to do with what happened to her, their only 'crimes' being investigating the haunted game. Although she appeared to regret killing Kyle, she got over it quickly when Kyle fought back against her, showing her need to justify her actions and lust for control are more important to her than feeling empathy for others. In addition, she's shown to be sadistic and openly admits that she enjoys toying with her victims, showing that while she does delusionally believe her actions to be justified, she also does it out of enjoyment in seeing her ex-friends suffer for no other reasons other than sadism and petty revenge. With her hatred mounting over her morals and judgement, Sarah is unwilling to listen to reason, refuses to admit that her revenge is hypocritical in nature and that her torture of her friends is something she enjoyed, and was primarily motivated by sadism.

Despite her egotistical nature and desire to torture her friends for nothing more than entertainment, Sarah is still a victim and is shown to be traumatized by the events that lead to her death. Being forcibly confined to an empty void, Sarah's psyche would undergo further mental collapse over the course of the next thirty years spent isolated and tortured by the night of her death, becoming blinded by rage and her fear of being forgotten and abandoned. Coupled with the manipulation of an unknown entity, it made it easier for Sarah to be influenced and manipulated. Sarah also has moments where she breaks down and shows genuine remorse for her actions, especially after she killed Kyle, but is coerced back into her murderous ways by the Entity influencing her. She's shown to still have some humanity left in her as Luther was shown to have gotten close to getting her to redeem herself, and it's very likely she would've accepted defeat if not for the Entity interjecting itself.

Sarah also, after all these decades, still shows genuine love for her then-girlfriend Lily, with her being one of the first things she thought about after waking up in the void.

Not much is known about Sarah's life, but she was born in 1943. At some point she began attending college with three of her friends, Michael, Martin and Luther, and was also in a relationship with a woman named Lily King. However, the group would often argue and fall out at times, as well as get drunk and argue at parties. Sarah was said to not be a great person and would often "walk all over" her friends.

In late-1963, Sarah and her girlfriend Lily were invited to a party and she went to Luther to recruit him as there'd be a lot of people she wouldn't be familiar with and wanted Luther to be there in case anything went wrong, due to Sarah and Lily being a same-sex couple in the 1960's when that was generally frowned upon. Luther agreed to go and brought along Michael and Martin. However, during the party, the group got drunk and got into a physical altercation, resulting in someone accidentally killing Sarah, likely by violently smashing a bottle over her head. The group, in their guilt and panic, moved Sarah's body from the location and tossed it in a nearby lake, promising to never speak about the incident again and take the story to their graves. Eventually, Sarah was registered as a missing person, with flyers being plastered around town as her friends, family and girlfriend looked for her. In Sarah's memory, Lily would adopt a son around the late-1990s and name him after Sarah's grandfather, Kyle.

Soon after dying, Sarah woke up in what appeared to be a black void, confused on where she was until all the memories of the previous night came flooding back. Although she felt betrayed by her friends not helping, she came to believe they would remember her, before eventually losing hope and believing they hated her. Declaring revenge against them, Sarah swore that if she couldn't go home, neither would they, and spent decades waiting in limbo for her to gain some form of access to the mortal realm once again. At some point, Sarah made contact with an unknown entity who influenced her hatred and motivated her to continue with her plan, as well as presumably bestowing her supernatural powers.

1993-1995

At some point, the video game company SEGA constructed one of their buildings over the lake where Sarah's corpse was buried. Sarah was eventually grafted onto the data of the company's mascot, Sonic the Hedgehog, being able to now shapeshift into his form. Although she was one step closer to completing her plan, she was still tormented by memories of the night she was killed, feeling how it felt to be killed over and over again.

In 1993, thirty years after her death, Sarah began to target her ex-friends, manipulating them by appearing to want to reconcile. She started off with Michael and trapping his soul in the game as Knuckles the Echidna, where she began to torture him by showing him imagery of his family. After doing so, Sarah documented her killings and threats in the form of haunted tapes and sent a message to Martin, threatening to come after him next after toying with him for a while and showing him what happened to Michael, and promising to kill Martin's friends and family unless he confessed. Ultimately, while she didn't end up killing his loved ones, Sarah would catch Martin and savagely kill him, placing his soul in the vessel of Dr. Robotnik.

After being forced to relive his death and the night Sarah died after refusing to admit his wrongdoings, Martin eventually managed to send a message to Luther, warning him to not play the disc and destroy it instead to set the souls inside it free, and to not fall for Sarah's facade. When Luther received the disk and the tapes, he created a tape confessing to covering up Sarah's death and vowed to destroy the disk to release the trapped souls within it. However, he was unable to find the disk he had put down and, to his horror, found that Sarah had already been summoned. Before killing him, Sarah lamented that she never wanted to forgive any of them and justified her crimes to herself by stating she did what was right, before telling Luther that he was in her world now where she would be its god. Sarah then murdered Luther and placed his soul in the body of Tails, completing her mission and allowing her to begin her eternal torture of her ex-friends.