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30 Unforgettable Undertale Trivia Questions and Answers

By Stefanie·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)Sans’s dialogue uses a font based on Comic Sans, matching his name and personality
  2. 2. Papyrus font style (all-caps, Papyrus font)Papyrus’s dialogue is displayed in the Papyrus typeface, a nod to his name
  3. 3. TorielToriel serves as the first major encounter and tests the player’s choices with mercy or fight
  4. 4. AlphysAlphys is the scientist behind Mettaton and the True Lab discoveries
  5. 5. UndyneOn a Genocide run, Undyne evolves into the fearsome Undying form to oppose the player
  6. 6. LV (Level of Violence)LV represents the player's Level of Violence, indicating how many monsters have been killed
  7. 7. Toby FoxToby Fox composed both the music and wrote the game itself
  8. 8. PapyrusPapyrus dreams of capturing a human and being accepted into the Royal Guard
  9. 9. AlphysAlphys built Mettaton originally as a body for her robotic creation
  10. 10. Asgore DreemurrKing Asgore reigns over the Underground and collects souls to break the barrier
  11. 11. Left eyeSans’s left eye glows blue during his boss fight, symbolizing his power
  12. 12. Defeating AsgoreFlowey absorbs his remains to become Omega Flowey after the neutral route's final fight
  13. 13. Moon: Remix RPG Adventure and Touhou ProjectToby Fox cited these games as inspirations for Undertale's unique combat and aesthetics
  14. 14. Sans (license unknown) and GrillbyGrillby owns the bar, and Sans occasionally appears there; they're featured in its depiction
  15. 15. Echo FlowersEcho Flowers repeat nearby speech in the Waterfall area
  16. 16. Asriel DreemurrAsriel is the deceased son whose death drives the game's narrative
  17. 17. The True Lab is hidden in the COREAccessible in the Pacifist route, True Lab reveals Alphys’s experiments
  18. 18. Asriel DreemurrFlowey is Asriel brought back as a soulless flower
  19. 19. SansSans confronts the player in Judgment Hall and judges them based on LV
  20. 20. MettatonMettaton uses quiz show segments and puzzles to challenge the player
  21. 21. Papyrus font style (all-caps, Papyrus font)Papyrus speaks in an all-caps font styled after the "Papyrus" typeface, matching his name
  22. 22. The True Lab’s secret dessert (e.g., Temmie Flakes)Only by completing key sidequests and consuming special items like Temmie Flakes can the True Lab be unlocked for the Pacifist ending
  23. 23. Toby FoxToby Fox himself composed “Megalovania,” which plays during Sans’s battle in the Genocide route and became a widely celebrated meme
  24. 24. Flowey’s Omega formPhotoshop Flowey (also FloweyX) is the corrupted end-boss version of Flowey encountered in the Neutral Route’s final battle
  25. 25. AlphysAlphys was initially conceptualized as a male, but the creator Toby Fox changed her to female and adjusted her design accordingly
  26. 26. Level of ViolenceLV is a hidden stat meaning "Level of Violence," reflecting how aggressive the player’s actions have been
  27. 27. The former Royal ScientistGaster was the previous Royal Scientist who fell into his own creation and became fragmented across time and space
  28. 28. Gaster (implied)Though not directly named, Gaster is identified in data as the Royal Scientist who created the CORE .
  29. 29. UndyneUndyne’s boss themes “Spear of Justice” and “Battle Against a True Hero” feature trumpet sounds inspired by the Touhou series
  30. 30. “Last Episode!”“Last Episode!” plays during the reveal of Mettaton EX, marking his transformation into a more powerful form

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