Door Key

UEE HEE HEE, THE KEY, THE KEY.
A MARVELLOUS FUN IS ABOUT TO BREAK FREE.
WON'T YOU LET YOURSELF OUTSIDE?

Jevil, Chapter 1

The Door Key (JP: とびらのカギ) is a Key Item in Chapter 1 of Deltarune. It can open the door at the ?????? floor in Card Castle, leading to Jevil's prison. The Door Key can be created by asking Malius to fix the three Broken Keys. However, Malius notes that the key holds a "terrible energy" and advises the party to never use it.

Gallery

• 
  Malius fixing the Broken Keys

Trivia

• The Door Key is mistakenly called the Prison Key when it is fixed by Malius.
• In the modified version of Deltarune's Chapter 1 used in Undertale's 6th anniversary stream, the Door Key is instead found in the top-left corner of the ?????? floor, with a sprite not in the normal game. When picked up, it is described as being "caked in dog fur and frosting".
• The Door Key cannot be brought into Chapter 2, even if it is in the inventory at the end of Chapter 1. It disappears when the Save Data is loaded into Chapter 2.