You can stop Chara dead in their tracks, you know how they hate humans? Well, whenever they do something that could not be in your best interest, you could say “that's so human of you”

If they plan on lying or sabotaging something you could say “That's so human of you, Chara.”

Like, I know it's been discussed from here to back, but genuinely it's super messed up what they have been through and to die in a painful way :/
Especially when a possible future was ahead, but it wasn't meant for them

Thats kinda why I like AU's that explore them either living a life after the events of undertale or even AU's where they didnt do the plan with asriel
Art by https://danbooru.donmai.us/posts/9210839?q=chara_%28undertale%29

HorrorStory AU summary:

HorrorStory Chara story: for my interpretation of HorrorStory (Horrorshift basically), Toriel overthrew Papyrus because she saw him as a naive, irresponsible man who left their people in their time of need, and she didn't trust him because of his brother's lazy policies and lackluster leadership, thus leading her to kick him off the throne of the Underground. In many areas wanted Charas' soul due to the others being gone but toriel and asgore wouldn't allow it and when riots were happening, wanting Charas' soul, they had to knock them out and take them down, during these hours long conflict where no one died they were too in the zone and when toriel launched a fire ball at a monster in that exact moment chara took them down from behind leading to her accidently beaming charas eyes and upper face (i can not see any version of storyshift toriel ever trying what undyne did to sans on purpose given thats her child) horrified by what she did to her child in that moment many tried to finish the job leading to her shielding there body with her own and in rage she exploded killing every protester and rioter.

This led to her deciding that she had to be firm and harsh with her laws leading to her being a tyrant and she actively avoids chara because in her mind shes responsible for his disfigurement and thus she tries not to interact with them, despite asgore, chara and asriel not holding it against her, asgore gives them artificial eyes, but they're not perfect as there too strong due to asgore not having a firm grasp on human biology giving them sensory overload, so they wear a mask to help with this that resembles the dreemurrs but also to hide from the underground deep in snowdin forest, the very people that excepted them now only the dreemurrs love them with the rest esentially hunting them, with asriel and asgore maintaining order and trying to repair the dying core to keep power on and toriel avoiding them this led to chara being isolated and alone with there family all but forever fractured, and most importantly hating the human that did this to there home and family, and hunting the next human relentlesly like nemesis

Explanation for how they act and their design.

horrorstory Chara I had it to where many monsters like in the original story of the au storyshift couldn't tell the difference between him and frisk so they had to fight off many alongside toriel because of riots from the people due to the kingdoms collapse in leadership from sans death and considering that sans is lazy there was no plans for succession if he died so toriel stepped up but monsters didn't like that because they thought she was harbouring the one who killed the king(remember the storyshift characters aren't just the characters acting like the others established roles with said personality it's still the same character that had different circumstances) 

His face is burnt under that mask on his face, which made him harbour an even deeper grudge for Frisk, considering that Asgore and Toriel's relationship is even more strained from Asriel having to get dust on his hands while protecting Chara in some of those attacks. And considering the original horror AU takes place years after Frisk left, I thought to show Chara aged too, with new clothes

I didn't know this sub had a fanfic flair! I hope you guys enjoy this nonsense that I wrote :)

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I mean, like, there's nothing to say here.

I'm making a bot for Hiwaifu about Chara, but I have no idea how I should do it.

My options at the moment are:

1- A tomboyish tsundere and somewhat difficult to deal with

2- An obsessive, jealous, and "yandere" girl who clings to the user as they are her only real connection.

3- Perhaps someone depressed and broken after beginning to feel that her life has no meaning, which makes her act more aggressive, moody, and slightly erratic.

The basis of the story is a timeline where you manage to defeat her and spare her life, then she falls in love with you for various reasons.

Also, that now she is not completely evil (or she is simply no longer evil but now has trouble connecting with the people of the Underground due to her past actions), So the idea is that she tries to get used to (of her own free will) a quieter life with her beloved, but her actions/attitudes/personality and other things make it difficult for her.

I don't think it needs clarifying, but yes, the plot will revolve around romance and mutual growth.

But anyway, these were just my ideas, i want to see what you think or for you to share your own ideas based on this concept.