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TriStar Kaiju
Species                         Nicknames
Mutated Fungus None
Height                           Length
Unknown Unknown
Weight                             Forms
Unknown None
Controlled by                 Relationships
None None
  Allies                             Enemies
None Zilla Junior
First Appearance
Underground Movement 
To be added

Armillaria (ミュータント・キノコ,   Myūtanto · Kinoko?, lit. Mutant Mushroom) is a mutant fungus kaiju created by TriStar Pictures that first appeared in the Godzilla: The Series episode Underground Movement.


Armillaria was a giant, mutant fungus which had miles of tentacles. It attacked and destroyed farmland in Michigan. Several members of H.E.A.T. was at the time in Miami, dealing with a lawsuit brought against them by Miami Beach (because of damages caused by Zilla Junior while battling a Giant Bat). When Randy and Craven, who are staying in New York, get word of the fungus's attacks in Michigan, the two set out to handle the problem alone. However, the fungus attacks them and leaves them stranded without any food supplies or communication, so they must learn to survive without. Fortunately, H.E.A.T. manages to locate them. The millitary digs up the monster fungus and Zilla Junior throws it into a deserted area of sand dunes, where there are no food resources and the fungus dies. The team then learns that the lawsuit has been thrown out.


  • Armillaria is similar to the cancelled kaiju Deathla, who has a mushroom form.
  • Armillaria's tentacles may be based on the Graboids from Tremors when rising from the ground and grabbing objects.

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