Top Ten Undertale Boss Fights

The Top Ten

1 Asriel

It's emotionally awesome. And "Hopes and Dreams" is so far the most different theme for a true final boss, in my opinion.

Simply amazing. Music, effects, everything about the battle is amazing.

Amazing graphics, awesome music, it's a battle to remember!

How to complete a full genocide route. (Might not work)
1) Complete a True Pacifist route up until Asriel Dreemurr's fight. (Pick toy knife up as weapon)
2) Get to the fight itself.
3) KILL ASRIEL DREEMUR.
If Asriel has all souls of monsters, you would instant gain LV 20, right? Even eithout fighting Undyne the Undying or Sans, you could get LV 20!

V 1 Comment
2 Sans Sans Sans or Sans the Skeleton is a character in the 2015 RPG Undertale created by Toby Fox. He is a lazy, pun-loving skeleton who is a supporting protagonist in the "pacifist" and "neutral" routes of Undertale, and a heroic antagonist/final boss of the "genocide" route. He is known for his incredibly difficult ...read more.

I beat him twice

Oh yeah

3 Mettaton Ex
4 Flowey Flowey Flowey is a flower in the RPG Undertale. He is the first character you meet, and also your best friend.
5 Muffet Muffet Muffet is a character from the game Undertale. She appears in a region called Hotland, selling pastries to raise money to rent a heated limo to help the spider clan from the Ruins (who are also raising a bake sale) reunite with the one in Hotland because the spiders can't cross Snowdin.

Hands down the best, I love the music, the character and the purple heart mechanic, it's the best. - FullMetalTimelord

Best song in the game

I LOVE MUFFET - HaydenGuyPotato

6 Asgore Asgore 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 ...read more.

By far the most depressing boss fight. You don't want to fight, and neither does he, but he thinks fighting is the only option.

7 Undyne Undyne Undyne is a main character in Toby Fox's 2016 RPG, Undertale. She is the heroic fishlike captain of the Royal Guard, who takes it upon herself to protect the monsters of the Underground. Her name is derived from the word "Undine", and is a pun on the word "Undying". Her most loved monsters are her mentor, ...read more.

I haven't played undertake and I wish I could, but Undyne the undying (I clicked on the wrong one :[ ) seem to be one of the most challenging other than sans and seems to make you feel the worst about yourself on a genocide run.

8 Undyne the Undying Undyne the Undying Undyne is a main character in Toby Fox's 2016 RPG, Undertale. She is the heroic fishlike captain of the Royal Guard, who takes it upon herself to protect the monsters of the Underground. Her name is derived from the word "Undine", and is a pun on the word "Undying". Her most loved monsters are her mentor, ...read more. V 1 Comment
9 Papyrus Papyrus Papyrus is a character from the 2015 game Undertale, made by Toby Fox . He is the Younger brother of Sans the skeleton, royal guard in training, and a sentry in the town of Snowdin . Opposite to his brother, papyrus is active, loud, and full of himself; but in an endearing way. Papyrus means to become ...read more.
10 Toriel Toriel Toriel is a main character in Toby Fox's 2016 RPG, Undertale. She is an amazing blend of goat and mother.

The Contenders

11 Napstablook Napstablook Napstablook is a secondary character from Toby Fox's 2016 RPG, Undertale. He is the cousin of Mettaton, who left him in order to become famous. Due to this, poor Blooky has crippling depression.
12 Mettaton NEO

Lol just joking

13 Mad Dummy
14 The Amalgamates
15 Red
16 Alphys NEO
17 Sanneess
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