Goon Doc are the Ghouled versions of the Boon Doc slugs. They would first appear in the episode "The Unbeatable Master, used by Dr. Blakk too kill Shanai. Later a possibly Megamorphed and unique one would appear as the main villain in the first two movies, Slugterra: Ghoul from Beyond and Slugterra: Return of the Elementals, but with powers of no other slug.

A famous Goon Doc referred to as "The Goon" was created by The Emperor, but aside from that he doesn't seem to have had any owner.

Another Goon Doc that has been seen in the series, but isn't famous, was the one that Dr. Blakk shot and killed Shanai with.


  • Protoform Abilities
    • Makes people feel ill when standing nearby
    • for more see "The Goon"
  • Medusi - A poison attack that will slow an opponent down for a short period of time.
  • Creepsleep - Poison paralysis drops opponent into a temporary coma.
  • Turncloak - Emits a ball of dark light that induces a zombie-like feral state. Slingers will begin to attack allies.
  • Ghoulgoyle - Hits an opposing slug and uses dark energy to transform them into a ghoul.
  • Leachfang - A poisonous bite drains the opponent of their health and worsens internal ailments.
  • Darkcloak (unofficial name) - see "The Goon"



  • A total of two Goon Docs have been seen in the series; One being a Blakk Industries manufactured Goon Doc that resides in Slugterra, while the other is from The Eastern Caverns (referred to as "The Goon").
  • Even though the Goon Doc slug is in fact a ghouled version of a Boon Doc slug, the popular slug "Doc", as is found in Return of the Elementals is the Energy Elemental. It left some people questioning what a Boon Doc/Goon Doc slug is if "Doc" is the Energy Elemental?


Goon Doc/Gallery

Opening Burpy Slugs Tormato ghoul

Grimm Types of Slugs in SlugTerra
Common Slugs Flopper · Slicksilver · Diggrix · Gazzer · Sand Angler · Slyren · Fandango · Phosphoro · Polero · Tormato · Tazerling · Rammstone · Frostcrawler · Armashelt · Flaringo · Thresher · Jellyish · Lariat · Dirt Urchin · Hop Rock · Grenuke
Uncommon Slugs Thugglet · Negashade · Blastipede · AquaBeek · MakoBreaker · Xmitter · Hoverbug · Flatulorhinkus · Arachnet · Bubbaleone · Speedstinger · Vinedrill · Lavalynx ·
Rare Slugs Frightgeist · Geoshard · Hexlet · Neotox · Firenzar · Tenasher · Glowbyss
Extremely Rare Slugs Boon Doc · White Boon Doc · Forgesmelter
Ultra Rare Slugs Infurnus · Enigmo · Crystalyd · Hypnogrif · Narwhaddle · Midas
Elemental Slugs Fire Elemental · Water Elemental · Earth Elemental · Air Elemental · Energy Elemental
Ghoul Slugs Darkfurnus · Goon Doc · Smugglet · Cryptogrif · Nightgeist · Tempesto · Aquafreak · Photomo · Neurotox · Terrarix · Barreto · Amperling · Grimmstone · Attacknet · Harmashelt · Bubbalash · Thrasher · Hop Jack · Frostfang · Jollyfist · Greneater · Dark Urchin · Briardrill · Pyringo · Flatulo Rex · Negablade · Hoverblade · Ghouled Crystalyd · Vexlet · Sand Mangler · Vamparo
Other Roboslug · Mimkey · Toxis · Slugling
Opening Burpy Famous Named Slugs in SlugTerra
Major Normal Slugs Burpy · Joules · Doc · Yang · Ping · Rookie · Bluster · Bludgeon · Stinky · Mo · Dazer · Spooker · Dozer · Digger · Stunts · Bugsy · Banger · Chiller · Spinner · Urchin · Tangles · Buzzsaw · Burner · Torch · Beeker · Glimmer · Suds · Mucky · Bolo · Goober · Larry · Rocky · Sparky · Noodle · Joo-Joo · Maggs · Rex · Joker · Yin · Beau · Pieper
Major Ghoul Slugs Loki · The Goon · Sparcx
Minor Slugs Butch · Ricochet · Flutter · Windsor · Old Timer · Dizzy

Start a Discussion Discussions about Goon Doc

  • ghoul negashade

    3 messages
    • No the negashade involves shadows. The boon death/ goon doc would because it does the opposite of heal. If the negashade was ghouled, it wo...
    • yeah it would basically be a ghouling slug. a ghouled nagashade would probably make a massive shadow filling an entire Cavan
  • Boon Doc ghoul

    4 messages
    • It actually does, look upon "Boon Death".
    • Now called Goon Doc

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.