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Villains Wiki

~ Holly Blue Agate, clearly shouting.
I'll report you to the Diamonds! All of you! You'll all be shattered!
~ Holly Blue threatening the Crystal Gems.
What are you all doing in here? Get to your stations! Even you hideous off-colored Betas, get out of your cubbies and into your places! It's the least you can do for the Diamond who kept you worthless, sorry Gems in service. That's right. Blue is back already! Now go pretend your filthy vein of Quartz is capable of gratitude! Go, go, go!
~ Holly Blue Agate Ordering The Quartz Soldiers around.

Holly Blue Agate is the secondary antagonist of the zoo arc in the fourth season of the animated series, Steven Universe. She is a Homeworld Gem under the command of Blue Diamond. Who manages Pink Diamond's Zoo and its employees composed of Quartzes who give her a hard time due to, in her own words, incompetence.

She is voiced by Christine Pedi.


Holly Blue Agate consistently shows effort in proving her loyalty to those higher than her. She also manages the base and its employees when Blue Diamond is not around, showing skill in leadership and management if only being rough and rude to the Quartz Gems that inhabit the facility in the process.

However, Holly determine the amount of respect and her loyalty can be exploited by the higher-class and have her point at the lower-class for caused situations. She blames the Quartz Gems, giving off an exaggerated idea of defectiveness and incompetence. This results in Sapphire thanking her precognition and let the Crystal Gems would otherwise be caught for be irrelevant.


Season 4

  • "Gem Heist" (debut)
  • "That Will Be All" (appears)


  • "Rose Buds" (appears)





  • Holly Blue's design was inspired by Marian the Librarian from The Music Man.
    • She is also based on Maggie Prescott, the main protagonist of the 1957 romantic comedy film "Funny Face".
  • She is the first pure-gem to have a first name, a middle name, and a last name due to her gemstone having three words in it's name.


          StevenUniverseTitle.png Villains

Great Diamond Authority
White Diamond | Yellow Diamond | Blue Diamond | Pink Diamond

Homeworld Gems
Peridot | Lapis Lazuli | Jasper | Yellow Diamond's Pearl | Blue Diamond's Pearl | Pink Pearl | Eyeball Ruby | Navy Ruby | Holly Blue Agate | Aquamarine | Topaz | Emerald | Hessonite | Squaridot | Pyrope | Demantoid | Spinel

Fusion Gems
Sugilite | Malachite | Cluster Gems | Cluster | Zebra Jasper | Bluebird Azurite

Gem Monsters
Nephrite | Albite | Gem Cave Creature | Big Bird | Larimar | Invisible Gem Monster | Lighthouse Gem Monster | Slinker | Great North Gem Monsters | Grossular Diopside | Monster Steven

Robonoids | Bismuth | Holo-Connie | Marty | Frybo |Strike