Who Is the Strongest Monster in Undertale?

Best Answer

Definitely Undyne the Undying. Her determination makes her nearly invincible, and she is not someone you'd want to mess with.

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More Answers

SinkingDuel·3 months ago

Asriel Dreemurr, in his true form, is arguably the strongest. His powers are off the charts, and the fight is an emotional rollercoaster.

DepetallingMummy·3 months ago

Hot take: Mettaton EX is the strongest. Those legs have the power to crush any opponent, including your high score.

RuingMite·3 months ago

Without a doubt, it's Sans—his fight is tough as nails, especially in the Genocide route. Good luck dodging those bones!

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