UNDERTALE Boss Song Ranking

It all ends here—every ounce of determination, brought together in this moment. A perfect finale. After everything the protagonist has been through, they gather all that determination once again and stand alongside those who came before them to face a seemingly impossible final boss. It's epic and absolutely grand in scale. The final showdown is so intense and uplifting that I genuinely couldn't help tearing up from the excitement. I'd easily call this one of my favorite final-boss themes in gaming.

This one genuinely moved me. It feels like the very essence of Undertale—the song that represents its core spirit more than anything else. Thank you, Toby Fox.

Unleash your determination! Hope still remains. Your friends, your journey—none of it ends here!

This track is actually insane. If you know, you know. Such a stylish OST too—it kicks in right as he transforms into that sexy robot form, and the whole thing just feels ridiculously fashionable.

Probably the hardest-hitting track in Undertale, and it represents the toughest final boss fight in the entire game. The protagonist isn't facing just another enemy here. They're facing a judgment—a judgment of the heart. It almost feels like the song itself is expressing how Sans feels about the protagonist in that moment.

The melody is really cool, and I love how each phrase is followed by that ghost-like “ooooh” synth sound. The beat goes surprisingly hard too. It fits Ghost perfectly, giving them this effortlessly cool music-kid vibe. Then at around 0:19, Ghost's vocals come in and—ah! Actual heaven \~ It's such a funny, playful style of music. Toby Fox is way too good at using music to give a character personality ==

A rearrangement of Ghost's melody, but much more aggressive, faster, and tighter rhythmically. I already love this melody to begin with. It's ridiculously catchy. And this version is longer too—the synth sounds kick in alongside the music and it just feels SO good!! You can't help nodding along to the beat.

This scared the hell out of me. Chaotic, noisy percussion layered over that endlessly looping, oppressive final-boss sound in the background— Warning. Warning— It's SOUL time! And then the boss suddenly descends on you again! Overall, this track is incredibly distinctive and memorable, and it fits the scene in the game perfectly. It's one of those tracks designed specifically around the story, so I'd rate it very highly for what it does. That said, I would absolutely never put this on casually, because you'll be having nightmares that night.

I really love the melody at the climax. Toby Fox went way too hard on the arrangement here. The buildup in the second half also has this really strong, unsettling atmosphere.

Rise, hero—never fall!

A more intense, fired-up version.

At first, this one feels pretty standard—very classic retro RPG, facing-the-final-boss kind of vibe. But later on, that tragic sense of grandeur really starts to hit. You can feel the king carrying the weight of having no choice but to face all of this. Halfway through the battle, it feels like you're being pulled into some ancient memory—but the fight still has to go on—

This track captures Papyrus's playful yet stubborn personality perfectly. Super memorable.

A really fiery, motivating track. It perfectly captures Undyne's fearless fighting spirit, while still carrying a nice sense of epic scale.

By the late game, this melody will be permanently lodged in your brain. The weird robot is coming for your mind.

wa wa wa wawa wawawa

wa wa wa wawa wa

wa wa wa wawa wawawa wawawa wawawa wa wa wa

wa

wa wa wa wawa wawawa

wa wa wa wawa wa

wa wa wa wawa wawawa wawawa wawawa wa wa wa

wa

Uhh, I honestly don't remember where this boss theme came from. Is it the OST for some specific enemy or something?

Uhh... this one just isn't really my thing. Don't kill me.

Asriel, what happened to you? Heavy metal does NOT suit you...