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Steven Universe: Crystal Clean is a graphic novel by KaBOOM! Studios that was released on May 5, 2020.


An all-new original graphic novel inspired by the world of the Cartoon Network Emmy® Award-nominated series, Steven Universe™ as Steven and the Crystal Gems must discover the truth behind the mysterious vandalism on the boardwalk!


Steven and the Crystal Gems are recruited by Mayor Dewey to help clean up the boardwalk before their new summer festival - but who is behind these acts of vandalism? As Steven and his friends investigate, they'll discover the culprits are their own kind of monstrous mess. Saving the day will be a dirty job, but someone's gotta do it!

Writer Taiya Perper and artist Selena Bejarano present an all-new original graphic novel story inspired by the world of the Cartoon Network Emmy® Award-nominated series, Steven Universe™.[1]






  • Pressurized Hydro-Kinetic Crystalline Device (P.H.K.C.D.)
  • Cloud Crystal
  • Guacola
  • Guacola Silo



  • The events of the book take place after "Raising the Barn", as Lapis' absence is a major plot point.
  • The book contains numerous references to the 2003 platformer Super Mario Sunshine.
    • P.H.K.C.D. is a reference to F.L.U.D.D.
      • P.H.K.C.D. is used to clean up Guacola in the same manner as F.L.U.D.D.
      • They share a very similar appearance.
      • P.H.K.C.D. is controlled with a control stick and a trigger, just like F.L.U.D.D.
      • Both devices have swappable nozzles switched out with the X button.
    • Guacola dissolves on contact with water, similarly to the goop in Super Mario Sunshine.
    • Steven's Guacola clone is a reference to Shadow Mario, a goop clone of Mario that vandalizes the town.
    • Steven is blamed for the clone's actions and forced to clean up the mess, much like Mario in Super Mario Sunshine.
    • Steven travels through the sewers in the same way as Mario.
  • Ronaldo sings along to what is presumably the theme song of Koala Princess.
  • Steven, Peridot, Buck Dewey, and the Crystal Gems fight Guacola clones of themselves, much like they fight Water Clones of themselves in "Ocean Gem".

Product details

  • Age Range: 8 - 11 years
  • Grade Level: 4 - 6
  • Series: Steven Universe
  • Paperback: 144 pages
  • Publisher: KaBOOM! (May 5, 2020)
  • Language: English
  • ISBN-10: 168415507X
  • ISBN-13: 978-1684155071
  • Product Dimensions: 6 x 0.3 x 9 inches


  1. 1.0 1.1 Steven Universe Original Graphic Novel: Crystal Clean - Book Depository, Retrieved December 26, 2019
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