Dave

Description
Dave Miller is a character directly taken from Day Shift at Freddy's version of William Afton/Purple Guy and follows most of that characters anatomy. Dave gets his purple appearance from being a living corpse with his soul possessing and holding on to his body. Otherwise he is the size of other humanoid beings. He is different from his regular counterpart in a few key ways but generally remains the same overall.

Personality
The majority of Dave's personality traits come from his character in  Day Shift at Freddy's some being toned down for the safety of other characters. Dave can be obsessive, violent and betrays people easily; He is for the most part a social outcast who has difficulty making healthy relationships with anyone. Dave does not value many people's lives outside of himself and the people he likes, showing a general disregard for safety for anyone outside that circle. However, he shows care for the few he considers close to him, even if these feelings aren't reciprocated. Dave has been heavily influenced and corrupted by Henry Miller through careful manipulation into doing his dirty work, a very important example of this is the killing of children for remnant which he at one point justified as being "The right thing to do" for what he considers to be a greater good, that being entering #edispilf-eht or "The Flipside". Eventually fate caught up to him and Dave was caught in a springlock failure. His soul refused to die and he repossessed his body over and over again to stay alive. Henry, intrigued by Dave's determination, rescued him but not without severe damage to his body and brain, causing him to turn purple. After the damage Dave suffered to his mind he lost view of his morals and began viewing his killings as entertainment and a form of humor.

Abilities
Dave, as a living corpse is immune to being harmed in ways regular entities would. He can lose vital organs, get decapitated or poisoned without being killed. The only way Dave can truly die is through being incinerated, most likely by fire. Dave is also extremely intelligent when it comes to tech, creating Funtime Freddy and the rest of the funtime animatronics during his time in #basement. He also has access to military grade technology crafted by himself such as his Aubergine Mech. Dave is weak in hand to hand combat and easily overpowered by most beings that can fight back, an exception being most robots and some cyborgs where Dave can find exploits and destroy them.

Story
The first appearance of Dave in the storyline is in #pizzeria (later changed to egg-pizza) where Funtime Freddy freaked out and killed a child in front of the other animatronics in the hopes of obtaining more remnant, Dave was filled with glee over the fact, though he did not play a big part in the rest of the interaction.

Dave was later unused for a long period of time (possibly in the #recycling-bin) he was later brought back and made a quick acquaintance with Yuri and followed her into the #literature-club unseen. After arriving Mustache Girl spotted him and tried to convince Yuri and the other club members to stop him, they did not comply. After being punched in the face by Mustache Girl, Glitchrap calls Funtime Foxy which scares her away. Dave learns Yuri's name and he insists on traveling with her. Eventually ending up in #the-top where he and Yuri continued to converse until both of their eventual disappearance and reappearance near the climax of the Dimentio Imploding Arc.

Dave made only a short appearance in the Dimentio Implosion Arc, in Dimentio’s throne room. He was there to witness Yuri’s suicide and fled the scene before the climax. Eventually Yuri was resurrected but Dave did not really care for her anymore, although he did not dislike her he had not seen Yuri as a friend anymore as her death felt like a betrayal to him.

Although the Daganronpa Arc is no longer canon there are a few canonical exceptions, Dave originally had access to his Aubergine Mech through this arc which is a reoccurring ability of his which the most notable appearance of which being in The Flipside Arc.

During The Flipside Arc, Dave receives a call from Henry, who he enthusiastically speaks to as Henry tries to keep this conversation private. Henry explains that he needs to tell Dave something in #breadbears-family-diner which he agrees to. When he arrives Henry explains what Dave needs to do, being find and capture three children alive. After a scuffle with a group currently in Main Streets, Dave retreats into his current home, #underground-hideout. Funtime Freddy then breaks into the hideout, while initially being irritated Dave saw this as an opportunity to cause some mayhem in the Main Streets while simultaneously completing his goal, so he tricks Funtime Freddy into believing there is a birthday party there. After following him to Main Street he unleashes Freddy into the group who begins trying to capture anyone small enough to fit in his chest. Funtime Freddy was eventually neutralized and Dave after losing a struggle gets sent flying before shortly chasing after the escaping group's car in his Mech which he proceeds to attack with lasers, missiles and Funtime Freddy. Dave eventually stopped the car and held it high in the air threatening to kill everybody if they didn’t agree to his conditions, that being the three children for his project with Henry. [REDACTED] offered to retrieve them in three days time but Dave did not believe her he kidnapped [REDACTED] and let the group know that Funtime Freddy would be able to know where to find him and if three days went by without his conditions he would kill [REDACTED]. Dave returns to #breadbears-family-diner with [REDACTED] without considering the group tracking him to Breadbear’s immediately. Henry, while annoyed, began getting information out of [REDACTED] while Dave sat around and twiddled his thumbs waiting for the party to arrive.

They eventually did and completed their part of the deal which surprised Dave who invited [REDACTED] inside, Breadbear and Farfour were sent out to attack [REDACTED] while the kids were taken to the backroom and promptly killed. Henry and Dave were meant to escape into The Flipside but Henry betrayed him last second and left him with the group in the diner.

As what follows this scene is no longer considered canon it will not be included.

Dave wandered aimlessly after Henry’s betrayal getting into small encounters with characters but nothing significant until the next arc he was involved with began, that being Jinsie’s Circus.

Dave arrived in #the-circus after hearing the music presumably from the #forest Dave walked inside, curious and excited, wanting to relive his experiences at Henry’s Circus ideally. But as it turned out it bored him deeply, it was a mockery of what he saw as real circus acts, what Henry accomplished on stage. Booing the act, he left partway in an agitated mood but was stopped by the chaos that soon ensued, he was now intrigued. As souls were being captured and the circus disappearing, Dave willingly ran in and got himself trapped with Lemon, Marx, Chair, Kawatta, Misaki and Juniper, all of which he does not care for. As he had no better option he continues to go along with the group participating little to none in coming conflicts, opting to ignore most threats and let other people do the work for him.

Eventually the group faced Mirrarthur, who summoned the soul of Mustache Girl. Immediately annoyed by her presence Dave tried to lay low but after a small fight she found him. Unfortunately for Dave, seeing him was exactly what Mustache Girl needed to break out of her trance, who then proceeds to attempt to choke Dave out. Dave has enough and bites her hand to escape and curses everyone out and swears he’ll be back. He then escapes into the circus, leaving everyone to deal with Mirrarthur themselves.

He reappears with Jinsie after the party fights their way to her bedroom. It isn’t deliberately explained how Dave found her but they became quick friends nonetheless. Both Jinsie and Dave attack the party with Dave shortly afterwards calling Breadbear in as well. He mostly commands Breadbear to attack the group. This continues until the core opens, immediately taking over Jinsie, and it tells Dave to obey it further. He refuses to, which angers it prompting it to attack Dave and the rest of the group who have to fight together to survive. Dave has an old trick up his sleeve and calls in the Aubergine Mech to attack the core after a bit of hesitation on his part. Jinsie and the core are eventually destroyed leaving everyone in the soon to be #burnt-forest. After the party regrouped and the surrounding trees were set ablaze by Lemon, Dave escaped into the forest.

Trivia

 * Despite making him, Dave has trouble remembering Funtime Freddy's name
 * There is a hallucinatory version of Dave called Eggplant Dave that haunts Mustache Girl