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Medium plant (mythos), neutral evil

Armor Class 15 (natural armor)
Hit Points 153 (18d8 + 72)
Speed 30 ft., fly 60 ft.

16 (+3) 16 (+3) 18 (+4) 13 (+1) 14 (+2) 12 (+1)

Saving Throws Dex +6, Wis +5
Skills Perception +5, Deception +4, Medicine +5
Damage Resistances fire, lightning; bludgeoning and piercing from nonmagical attacks.

Damage Immunities cold
Condition Immunities blinded, deafened, frightened
Senses blindsight 10ft., darkvision 120ft., passive Perception 15
Languages telepathy 60 ft. (does not speak though there is a humming sound when it uses telepathy)
Challenge 6 (2,300 XP)

Special Traits

  • Deceptive. A mi-go is a master of deception. It has advantage on Deception and Disguise checks.
  • Evisceration (1/turn). A mi-go�s claws are capable of swiftly and painfully performing surgical operations upon helpless creatures or those it has grappled. When a mi-go makes a successful Strength (Athletics) check to grapple a target, or hits a grappled, restrained, or incapacitated target, it deals 13 (4d6) slashing damage in addition to any other effects.
  • Starflight. A mi-go can survive in the void of outer space. It flies through space at incredible speeds. Although exact travel times vary, a trip within a single solar system normally takes 3d20 months, while a trip beyond normally takes 3d20 years (or more, at the GM�s discretion) � provided the mi-go knows the way to its destination.
  • Tech-Magic. A mi-go possesses the ability to create strange items that blur the line between magic and technology, given time and resources. Each encountered mi-go will have some type of special equipment. Unlike other technological weapons mi-go tech-magic items are biological in nature and require a Wisdom (Medicine) check to figure out (see Alien Technology in Chapter 9 of the Official 5th Edition Guide for Game Masters)


  • Multiattack. The mi-go makes four claw attacks.
  • Claw. Melee Weapon Attack: +6 to hit, reach 5 ft.; one target. Hit: 7 (1d8 + 3) piercing damage and the target is grappled (escape DC 13).
  • Marro Bonegun (Tech-Magic). Ranged Weapon Attack: +6 to hit, range 150/600 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 4 (1d8) poison damage.


Mi-go are both scientists and colonists�extraterrestrial travelers from deep space who view the universe as a canvas to be mastered and controlled. Their numbers on any particular planet can vary, but taken on a galactic scale, are mind-numbing in scope.

Fungi from Beyond. Mi-go are unnaturally graceful creatures has a bulbous, lumpy head, spiny insectoid wings, and a tangle of spiky, clawed legs. Although a mi-go�s shape might suggest it is an arthropod, the creature is, in fact, a highly evolved form of extraterrestrial fungus. Mi-go communicates via a combination of clicking pincers and subtle shifts in the coloration of their bulbous heads. A typical mi-go is roughly the size of a human but weighs only 90 pounds.

Section 15: Copyright Notice
Mythos Monsters (5E) © 2020, Legendary Games; Authors Michael "solomani" Mifsud, Robert J. Grady, Mark Hart, Jeff Ibach, Alex Riggs, Scott D. Young, Jeff Lee, Matt Kimmel, and Jason Nelson.