Boss Fights
This is the first boss in the entire game
Who is Napstablook?
Toriel gives you this item when you get to her house
What is Butterscotch-Cinnamon Pie?
This track was heavily popularized by the Sans fight
What is Megalovania?
A dog shrine is hidden inside this object
What is Papyrus' Sink?
Most of Flowey's voice lines are from an old commercial of this fast food chain
What is McDonalds?
While they don't intend on killing you, this boss can accidentally do it anyway
Who is Toriel?
This armor piece is on you from the start of the game
What is the Bandage?
This song plays in the Papyrus fight
What is Bonetrousle?
This number system determines if certain events can happen
What is Fun Value?
If you go to Undyne's house at the end of true pacifist, you can find this person
Who is Mettaton EX?
This boss has the most versions of itself, with a total of 3
Who is Mettaton?
This item can spare any dog encounters
What is a Stick?
In every track in the game, this song is present in most of them
What is Ruins?
You can access a hard mode in Ruins by naming yourself this character
Who is Frisk?
In earlier versions of the game, the dialogue can clip out the box if you call on this spot
What is Conveyer Belt?
When Undertale first released, this boss was so hard to where some kids emailed Toby Fox to help beat it for them
Who is Muffet?
Intended as a joke, this item is famously used to skip entire sections of the game
What is Punch Card?
This term used to described reused melodies from other songs are everywhere in Undertale
What are Leitmotifs?
If your fun value is 66, you can find this character
Who is Mystery Man/Gaster?
"Asriel Dreemurr" is an anagram for this sinister title
What is Serial Murderer?
If you go into a certain area in Hotland at 8 PM on October 10th, you can fight this boss
Who is So Sorry?
This item in Waterfall can reduce karma damage in the Sans fight
What are Cloudy Glasses?
This unused track is often theorized to be the theme of WD Gaster
What is Him?
If you mess up the code in the game, this character shows up in an error screen
Who is Annoying Dog?
The music in Undertale was made in a pirated version of this music making application
What is FL Studio?