Theories
Character
Deltarune
Undertale
Secrets
100

The most popular candidate to be the roaring knight

Who is December Holiday/Dess

100

This Deltarune character hates the player because of what the player does with them

Who is Kris Dreemurr

100

This is how you skip the lightworld sequence (or darkworld sequence because of chapter 3)

What is going back to sleep

100

The first monster you meet in the underground

Who is Flowey

100

Who do you manipulate in the snowgrave/weird route

Who is Noelle Holiday

200

Theorized to be revealed as evil in later Deltarune chapters NOTE: (I would say this is an older theory ch 1-2)

Who is Ralsei

200

This bad guy becomes our ally

Who is Lancer

200

The first item you forcefully get

What is the manual

200

The character with probably the most variations + the most fangirls

Who is Sans

200

The secret boss of Deltarune chapter 3 (Shadow crystal holder)

Who is the roaring knight

300

This character is thought to be the person who speaks to the player in the first cutscene of Deltarune and is thought to be the forgotten man

Who is Gaster

300

This character has a missing family member

Who is Noelle Holiday

300

Fill in the blank (meme): "its like some __ of SNOWGRAVE"

What is "king"

300

Temmies most popular item in her shop

What are TEMMIE FLAKES

300

How you get to the egg room (in any chapter)

What is walking back and forth between two set rooms
400

This Deltarune character is thought to be homophobic (this is mostly a joke theory I would say)

Who is Carol Holiday

400

This character is one of the main characters and people still pronounce their name wrong

Who is Ralsei (some people pronounce his name as Ral-zee instead of Ral-say)

400

Noelle's borrowed pencil in the darkworld

What is the jingle blade

400

Gaster is related to this number

What is the number 6

400

Toby fox does this to Kris with his car in Deltarune 

What is ramming Kris
500
This character thought of by some to be the main antagonist of Deltarune

Who is Friend

500

This character has a shop that is clopen

Who is Sans

500

This character is getting catfished

Who is pizzapants

500

Everybody hates him

Who is Jerry

500

This happens when you do the big shot glitch in Spamton Neo's battle

Does Spamton get mad and make the attacks harder