Top 10 Saddest Undertale Deaths

I was surprised to see this wasn't a list already, so I figured I'd take action.
The Top Ten
1 Papyrus (Genocide Route)

He believes in you.
But. You don't.
And worst of all, you hear him blabbering about how he will soon become a royal guard in pacifist / neutral.
He never even got to talk to undyne when we first encounter her.
So he never became a royal guard. And he tried all of that stuff to be one.
He built stuff, he waited outside the captains house all night, he started training, he got his own lazy brother to watch outside a post for any humans, he and his brother set up puzzles. All of that just for an actual human to come down in Snowdin, making papyrus think he would finally become part of the royal guard. Only for his soul to be ripped from his body as he states that he still believes in you.
"Are you offering a hug of acceptance?"

You decapitated him and he STILL believes in you.
"St-still! You can do a little better, I promise! Even if you don't think so!"
We can see the effects it has on other characters too. If you abort the genocide into a neutral, Sans tells you to go to hell, which he also does if you do genocide all the way through.

It's horrible. He isn't totally naïve, but he does realize you have something up with you. "They way you shuffle about from place to place, the way your hands are always covered in dusty powder." He knows you have something wrong with you. He knows you are evil. And even though he knows all of this, he still decides to spare you. To give you MERCY. He even wants to give you a HUG. A HUG to someone who's killed over 50 monsters. If you kill him, you are not human. And when you do slash him, right afterwards, he says he still sees hope in you. Now go away, you dirty brother killer.

If there's anybody nice enough to befriend a genocidal maniac and get them on the right path, it's Papyrus. He offers nothing but friendship and guidance to the protagonist and even will refrain from fighting him. You can spare him immediately, but killing him will result in him letting you know he still sees a shred of a good person within you. Even if you halt the route later, killing Papyrus will cause both Undyne and Sans to despise you(more than usual in Undyne's case)

2 Undyne (Neutral Route)

Jesus, if there's a character who's death is anywhere close as sad as Undyne, It's Papyrus. Sure, she is sort of a... lets say, jerkwad, just to keep it Family-Friendly, but she's only that way to protect her kingdom, family, and friends. I mean, if your family were in danger of DYING, wouldn't you protect them, too? I would protect ANYONE I could from getting hurt. In the end, she just wanted to protect her kind, and you went off and killed her without thinking twice. She tries to stay alive; she doesn't want to die. Nobody does. Neutral could be the worst you could do. Think about Alphys and how she has to suffer through life now, knowing that her best friend and the only one who really cared about her is dead. Jesus, dude.

I'm a huge fan of Undyne and she's definitely my favorite character along with Papyrus. If you decide to kill this hero, she stays determined to live on by thinking of all the people she loves. Her mentor and father figure Asgore, her love interest Alphys, her best friend Papyrus...they're the reason she's fighting, and she refuses to let herself die. As she slowly fades away, she shouts that she can't die because she must protect everyone. Along with the depressing music track that plays with it, it makes it an incredibly sad experience.

I killed Undyne on my first run, convinced that I had too. I never felt more like a total turd killing a character in a video game. I love you, Undyne.

I accidentally killed lesser dog and greater dog in a run, and what Undyne said about being devastated by their death was saddening.

3 Asriel Dreemurr (True Pacifist)

Condemned to live forever as a soulless golden flower from the same garden in which his sister took the flowers which she killed herself with.
"Someone has to keep looking after these flowers."
This line hit different. Those flowers, beneath them is Chara's corpse, still with the seeds of the golden flowers that became her end. I just wish that we could give Asriel seven human souls (Six from the Barrier, one sourced from death row inmates (or D-Class)) and give Chara an injection of DETERMINATION. That would be a real happy ending.

The True Pacifist route is by far the most enjoyable way to play Undertale. You free all the monsters and give them their happy ending-that is, except for Asriel, who's doomed to be trapped in the body of a flower for what seems to be forever. As much as fans hope, there doesn't seem to be a lot of hope for poor Asriel.

He doesn't die, but he might as well have. No matter how we look at him, there's just no more Asriel in Flowey.

I cried so hard at the end of the True Pacifist route. I just couldn't bear leaving him behind.

4 Sans (Genocide Route)

Sans just wanted to be happy, and to make Papyrus happy... It hurts that anyone would try to even hurt a guy like that. I love my own little bro, so I understand Sans, but not anyone who can kill him or Papy.

Sans just wants to be your friend in pacifict/neutral. Then you kill everyone he cares about. His last words were even to his dead little bro. I can't do genocide for THIS reason.

I have personally never done genocide, but it is really sad how he walks off, asks papyrus a question, and then joins him in the afterlife.

The last part where he just asked Papyrus if he wanted food was heartbreaking. He accepted his fate and crawled off screen and died peacefully? sad? I don't know.

5 Alphys (Certain Neutral Routes)

She takes her own life because you killed two of the only people who cared for her. Neutral Routes are sometimes worse than Genocide Routes.

To answer your question, she commits suicide off-screen. If you kill Mettaton or Undyne, she says this. " I was just worried I would be too afraid... To tell the truth... That I might run away, or do something... Cowardly." After that, she tells you to leave, and if you come back to the door, it would say that no one would answer it.

It's just really sad to have her let you kill her because she felt guilty...just sad

When I found out about this, I was so sad.

6 Toriel (All Routes)

Need I explain this one?
"Y-you really hate me that much...? Now I see who I was protecting by keeping you here, not you... But them! Ha... ha... ha... ASGORE. Do not let ASGORE take your soul."

I didn't feel anything at all in the genocide route.
But... somehow I feel like I need to vote for this one because you are killing your own mother. Toriel only wanted the best for you, and you struck her down.
I feel like whenever someone is playing Undertale for the first time, this fight really decides what path you take.
I know because I nearly killed her in my first run.

Toriel was the mother figure of the game, and to just kill her! What kind of monster are you if you do that! She even says, "Y- You really hate me that much? Now I see who I was protecting when I was keeping you here... them. Be good... My... Child..."

You literally just kill your own mother, the only monster who ever cared about you. She bakes a pie just for you.

7 Asgore (Neutral Routes)

"I remember the night after my son died..."
ASGORE is the most tragically misunderstood character in Undertale. It's a real shame that most of the fandom just say the same tired old "he killed six kids!" thing. Undyne wanted to kill you too, so did Mettaton. Flowey killed possibly millions ffs, and you're saying that Asgore deserves all the hate he gets because he wanted to free his people? Hell, given that the fallen humans' items are found at different parts of the game, it's likely they were all killed by the Royal Guard rather than Asgore himself.

By killing Flowey, then going back to Asgore to fight again, you can as usual spare him or kill him. Sparing him is the right thing to do(even though Flowey kills him anyway), but if you spare him after following the pattern I mentioned, he will give you his own soul, thus ending his life. In any route except True Pacifist, Asgore is tragically killed and thus causes devastation in the underground.

Asgore is awesome, he is one of my favorite characters, yet no matter what run you do, you see him die tragically. Flowey is just so terrible killing his OWN FATHER in the worst way possible.

It's sad to see Asgore's life taken from him, just as he experiences a glimmer of hope for the first time in decades.

8 Undyne (Genocide Route)

Undyne dies. And then she comes back, realising that she has to protect all of humankind AND monsterkind. Ironically, in being sliced in half by a human, she realises their worth. But alas, she is struck down once more, and with a smile, she has hope for the world, even in her last dying moments.
"By now, Alphys has called ASGORE and told him to absorb the Six Human Souls... And with that power, THIS WORLD WILL LIVE ON!"

She's just trying to save her people from a genocidal maniac!

"This world will live on..."

9 Flowey (Genocide Route)

Flowey- or I suppose I should say Asriel -still believes that Frisk, this genocidal maniac who sees murder as a game, is Chara, his best friend who took her own life trying to save monsterkind. Asriel is confused, he is terrified, and he is dead.
"I never betrayed you, see?! I- I can be helpful to you! I can help.. I can... I can... Please don't kill me..."

Maybe the genocidal weed deserves to be killed, but at the end of Genocide he realizes he's Asriel and begs you not to kill him. Spoiler alert: you have no choice, and must kill him. In what may be the most brutal hits in the game.

The genocide route is the saddest and worst route you could take, and flowey's death at the end looks so sad, but not as sad as other deaths.

Not that sad. Sure, he might do the Asriel face, but he isn't really Asriel.

10 The Dogs (Any Route You Kill Them In)

I hate killing Lesser Dog in Genocide. It breaks my heart.

Killing dogs is messed up.

The Contenders
11 Disbelief Papyrus (Genocide route in Disbelief)

He only wanted to protect his brother... He still gave you another chance after all that...if my sis got harmed I'd be mad to the bone. But THIS. THIS. That is brutal.

12 Muffet's Death (Neutral/Genocide Route)

Not very sad, but if you kill Muffet then a spider will crawl onto the spot where she died and leave a rose. It's kind of sad, really.

13 Temmie (All Routes)

Why? They're happy, their song is happy, why did you ruin their life?

Why would you kill Temmie! Temmie helped make Undertale!

14 Mettaton (All Routes)
15 Papyrus (Neutral)

It's so sad because, if you get his health low enough, Papyrus will spare you. It's impossible to do by accident.

16 Chara (All Routes) Chara is a character in the game Undertale by Toby "Radiation" Fox who is one of the seven people to fall to the Underground prior to the fall of the player character. Their name can be changed by the player and will be assumed as the player character, until the Pacifist Route when Asriel asks for the player's name, which is Frisk. In the genocidal route (achieved by killing as many monsters as you can without sparing), they appear by the end to destroy the world, which happens regardless of the player's choice or intervention. Due to this, most people see them as a villain.

Chara took her own life trying to save all of monsterkind. If that isn't at least a little bit tear-inducing, then I don't know what is. Chara was never evil, she hated humanity likely due to abuse (Faded Ribbon description) and fell into Mt. Ebott trying to commit suicide. Then, she found a new family who actually cared for her, and she poisoned herself in one of the worst ways possible just to try and save them. Then Asriel, in his infinite kindness, fails the plan, leaving two siblings dead in one night.

We never see Chara's death for ourselves, but look at the impact it had on the rest of the Underground! Asriel died fulfilling their final request, the whole kingdom despaired, Asgore and Toriel broke up, causing Asgore to wage war with humanity, which then led to the deaths of six innocent humans. From what we've seen in the tapes, Chara poisoned themself in an attempt to help free the monsters from the Underground, but the plan went wrong, and their sacrifice was all for naught when it only led to the death of Asriel and the devastation of all the monsters in the Underground.
If this isn't tragic, I don't know what is.

I just found out about their backstory and how they exactly died. This is so sad.

Such a sad one...

17 Mad Dummy (Genocide)

It was so happy that it finally got to feel alive... and then you just take that right away from it! Now that is just cruel...
Also I just wanna say that this so deserves to be ABOVE a FAN-MADE character, not below.

18 Snowman (Genocide)
19 Toriel (Any Route)
20 Flowey (Neutral)

No, I'm not talking about Photoshop/Omega Flowey, I'm talking about right after you beat him, right after he turns into his regular flower form, and when you kill him instead of sparing him when you get the chance. Even though he wanted to die, and makes that face when he says "I knew you had it in you," it's still pretty sad if you think about it.

21 So Sorry (Pacifist)
22 Asgore (Genocide Route) Asgore Dreemurr is a boss monster and the king of the monsters in the 2015 RPG Undertale made by Toby Fox. Asgore is the portrayed main antagonist who plans to acquire seven human souls and use their power to break the barrier that seals the monsters underground . Aspects of his character are hinted at throughout the players journey and his fate at the end of the game is determined by the choices the player has made.
23 Asgore (Pascifist)

I don't know if he dies in pacifist but flowey takes his soul so that's kinda mean I blame flowey

24 Frisk (All Routes)
25 Dogi (Dogamy/Dogaressa) (Neutral and Genocide)
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