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30 Unforgettable Undertale Trivia Questions and Answers

Reviewed by Stefanie Zaldarriaga, Author·Updated Aug 2025·4 min read

Step into the Underground with Undertale Trivia! From Sans and Papyrus to Flowey, Toriel, and the unforgettable encounters with monsters, these questions will test how well you know Toby Fox’s beloved indie RPG. Perfect for fans of its quirky humor, emotional storylines, and unique gameplay choices, this trivia is a fun way to relive the magic (and the feels) of Undertale.

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  1. 1What typeface is used for Sans’s dialogue?

  2. 2What typeface does Papyrus use?

  3. 3Who is the first boss encountered in the game’s Ruins?

  4. 4Who is revealed as the Royal Scientist?

  5. 5Which character transforms into Undyne the Undying in Genocide route?

  6. 6What hidden stat measures player aggression?

  7. 7Who composed the entire Undertale soundtrack?

  8. 8Which character wants to join the Royal Guard?

  9. 9Who created Mettaton?

  10. 10Who is the ruler of the Underground?

  11. 11Which eye turns glowing blue when Sans battles in the Genocide run?

  12. 12What triggers Photoshop Flowey in neutral ending?

  13. 13Which thematic series influenced Undertale’s gameplay?

  14. 14Which NPC runs the Grillby’s bar?

  15. 15Which plant-like enemies mimic your spelling?

  16. 16What is the name of Toriel and Asgore’s son?

  17. 17Which house holds the True Lab?

  18. 18Who is Flowey’s original form?

  19. 19Who judges the player at the end of Genocide run?

  20. 20Which character guides the player using horror-themed puzzles?

  21. 21What visual difference distinguishes Papyrus’s dialogue text?

  22. 22Which item must be consumed to trigger the True Pacifist ending?

  23. 23Who composed "Megalovania," Sans’s boss theme?

  24. 24What secret boss is known as "Photoshop Flowey"?

  25. 25Which character was originally intended to be male but became female during development?

  26. 26What does LV stand for in Undertale’s mechanics?

  27. 27What is W.D. Gaster known as in the game’s lore?

  28. 28Which character is referred to as the Royal Scientist in-game?

  29. 29Which character’s boss theme uses trumpet-inspired motifs from Touhou?

  30. 30What theme accompanies Mettaton’s transformation to EX?

Answer Key

  1. 1. Comic Sans–style font (appropriately named Sans)
  2. 2. Papyrus font style (all-caps, Papyrus font)
  3. 3. Toriel
  4. 4. Alphys
  5. 5. Undyne
  6. 6. LV (Level of Violence)
  7. 7. Toby Fox
  8. 8. Papyrus
  9. 9. Alphys
  10. 10. Asgore Dreemurr
  11. 11. Left eye
  12. 12. Defeating Asgore
  13. 13. Moon: Remix RPG Adventure and Touhou Project
  14. 14. Sans (license unknown) and Grillby
  15. 15. Echo Flowers
  16. 16. Asriel Dreemurr
  17. 17. The True Lab is hidden in the CORE
  18. 18. Asriel Dreemurr
  19. 19. Sans
  20. 20. Mettaton
  21. 21. Papyrus font style (all-caps, Papyrus font)
  22. 22. The True Lab’s secret dessert (e.g., Temmie Flakes)
  23. 23. Toby Fox
  24. 24. Flowey’s Omega form
  25. 25. Alphys
  26. 26. Level of Violence
  27. 27. The former Royal Scientist
  28. 28. Gaster (implied)
  29. 29. Undyne
  30. 30. “Last Episode!”

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