Top Ten Hardest Undertale Bosses

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1SansSans 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.V2 Comments
2Asriel Dreemurr

How is this fight hard? You can't even die in it!

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3Omega Flowey

Sans on hard mode is one hell of a boss, but Omega Flowey on Hard Mode is NUTS! X( I don't think anyone has beaten this boss on Hard Mode. - Doge4lifeGaming

Sans on hard mode is one hell of a boss, But Omega Flowey on Hard Mode is NUTS! X( I don't think anyone has beaten this boss on Hard Mode.

4AsgoreAsgore 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 the 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.
5MettatonMettaton is a character in the popular 2015 RPG game, Undertale. He is a robot with a soul built by Dr. Alphys, and is the sole television star of the underground. Mettaton is a popular character in the fanbase. His notable features include his legs, and his catchphrase "OH YESSSS!"
6Undyne
7PapyrusProbably the second most popular character from the already insanely popular 2015 indie RPG known as Undertale, Papyrus the skeleton is Sans' taller and skinnier younger brother (much like how Luigi is to Mario in the Super Mario Bros series, except that Papyrus is physically stronger than Sans) who ...read more.
8Toriel
9Muffet
10Undyne The Undying

The Contenders

11Mad Dummy
12NapstablookV1 Comment
13Seven Human Souls
14Alphys NEO
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List StatsUpdated 8 Dec 2016

14 listings
144 days old

Top Remixes

1. Asriel Dreemurr
2. Sans
3. Omega Flowey
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1. Sans
2. Omega Flowey
3. Asriel Dreemurr
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