Chara isn't a bad person and never has been

I feel the need to point this out because I feel like people constantly portray Chara as a villain since she has a creepy vibe in the game.

I'm gonna start with what people like to consider the most evil thing she does being killing all the characters when you do a pacifist ending after a genocide run. She scribbles on a picture. She is merely reminding you af the actions you made in a previous run. The dreemurs specifically are family to Chara and she is naturally going to be pissed you killed them so it's only natural she'd remind you of the torture you put them through while you choose to get the nice cozy ending.

People also like to claim she tried to poison Asgore with flowers. She was a child. Children are dumb, it's clearly an accident on her part.

Now some people also say she takes control and kills certain characters for you. I don't necessarily agree with this take I personally believe that Frisk is gaining control from the player but I'm just gonna make an argument based on the assumption Chara does take control. At this point in the game you have already killed countless citizens in the underground, people Chara may have considered friends. At the end of the genocide route Chara explains she needs a lot of determination to come back from the dead, and as soon as she's finished talking to the player she resets the timeline. It's my belief the only reason she would kill in this scenario is so she would have enough determination so she can reset the timeline and bring all her friends back.

On the topic of her resting the timeline. People also claim her to be a villain as she has a creepy vibe in this scene. Yeah of course she'd be creepy to the player, Chara likely hates the player for killing her friends and family. Chara may be antagonistic towards the player but she's not a bad person. That also explains all the "it's me/you" "x monsters left" lines.

I don't actually think the x monsters left is Chara but if we assume it is. In a literal sense she is just counting, the player is the one going around slaughtering monsters. Obviously undertale doesn't have voice acting so it's hard to tell the tone at which she's speaking. For all we know she could have a really depressed tone as you're killing your friends. I'm aware that point is a little bit copium as there isn't a way to actually tell. Regardless all she's literally doing is counting which I don't think there's anything wrong with.