#19.5 – Gruber, The Mimic

Gruber the Mimic - image of fancy treasure chest
Elegant silver chest

About Gruber

Gruber Background 

Gruber is oddly intelligent, articulate, and social for a mimic. He’s been desperately bored and lonely being stuck in the treasure room with skeletons and 2 other “standard” mimics who don’t speak at all. He’s eager to make friends and have someone to talk to. Desperate. to. Talk.

Wizard’s Pet / Guard

Gruber was raised by a wizard who recognized the unusual intelligence in this mimic and taught him to speak and read in several languages (never figured out how to write with that psuedopod). Gruber helped the wizard with his research and spell preparations. (Bard Lore levels) Unfortunately the wizard met a bad end when one of his deals with a demon became known to the local heroes.

Not a fan of Dreadstroms

He hates Kazel. Kazel tricked Gruber, promising him an important part on his team guarding their treasure. Then literally stabbed him in the back with the magically enchanted blade attached to the wall anchor. No matter how Gruber changed his shape, he couldn’t dislodge the blade.

Other tidbits

Through smell, can sense demonic/devilish entities (they smell like cilantro)

Has an extensive knowledge of furniture, boxes, and trunk designs and art styles

A bit of a coward, but can fight if it has pressed

Gruber Character Sheet


5th Edition Dungeon Master’s Guide – pg 220 – Modified

AC 12 
Hit Points 61
Speed 15 ft.
Height Varies (avg 2 ft 10 inches) 
Weight 265 lb

STR 15 (+2), DEX 8 (-1), CON 14 (+2), INT 17 (+3), WIS 11 (0), CHA 8 (-1)

Damage Immunities acid
Condition Immunities prone

Senses Darkvision 60ft, Passive Perception 10, Passive Investigation 12
Languages Common, Undercommon, Draconic, Abyssal

Proficiencies Saving Throws Con +4
Arcana +7, Deception +6, History +5, Persuasion +1, Religion +5, Stealth +4


Bites Melee Weapon Attack: +5 to hit, reach 5 ft  Hit: 1d8+2 piercing + (1d8 acid) Range: 5 ft

Psuedopod Melee Weapon Attack: +5 to hit, reach 5 ft  Hit: 1d8+2 bludgeoning. If the mimic is in object form, the target is subjected to the Adhesive trait (grappled)

Special, General to Mimics

Shapechanger. The mimic can use its action to polymorph into an object or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn ‘t transformed. It reverts to its true form if it dies.

Adhesive (Object Form Only). The mimic adheres to anything that touches it. A Huge or smaller creature adhered to the mimic is also grappled by it (escape DC 13). Ability checks made to escape this grapple have disadvantage.

False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary object.

Grappler. The mimic has advantage on attack rolls against any creature grappled by it.

Mimics in General:
Mimics are shapeshifting predators able to take on the form of inanimate objects to lure creatures to their doom. In dungeons, these cunning creatures most often take the form of doors and chests, having learned that such forms attract a steady stream of prey.

Imitative Predators. Mimics can alter their outward texture to resemble wood, stone, and other basic materials, and they have evolved to assume the appearance of objects that other creatures are likely to come into contact with. A mimic in its altered form is nearly unrecognizable until potential prey blunders into its reach, whereupon the monster sprouts pseudopods and attacks. When it changes shape, a mimic excretes an adhesive that helps it seize prey and weapons that touch it. The adhesive is absorbed when the mimic assumes its amorphous form and on parts the mimic uses to move itself.

Cunning Hunters. Mimics live and hunt alone, though they occasionally share their feeding grounds with other creatures. Although most mimics have only predatory intelligence, a rare few evolve greater cunning and the ability to carry on simple conversations in Common or Undercommon. Such mimics might allow safe passage through their domains or provide useful information in exchange for food.

Here is a character sheet for Gruber using the ForgedAnvil D&D 5E Character Generator: Gruber the Mimic Character Sheet PDF

Link to ForgedAnvil character sheet download page: ForgedAnvil D&D 5E Character Generator 

Gruber Dialog

Examples of the rambling, babbling dialogue of Gruber’s that happened while the group was resting, but had freed him in exchange for aid in finding Kazel:

  • So what’s your home like? Is it a castle? Is it nearby? How long will it take us to get there once you’ve done here? Is it dry? I am SO TIRED of being wet! Will I be inside a room? Out of the rain and snow, ya know, but still be able to see the sun and clouds?
  • This is going to be great! ::Changes shape to match one of the boxes, but with fancy flourishes:: Yup! For all those inconvenient enemies you need gotten rid of, I’m your Gruber!
  • Tap. Tap. Tap.
  • I am SOOOO hungry. Are you sure you couldn’t spare that squishy one over there? ::Waves his psuedopod at mage:: He doesn’t look very useful. If there’s a fight, I’ll be much more help with food in my belly!
  • So you know, I need my food alive when I eat it. And to keep me at top fighting condition, I should eat at least one humanoid a week. But the occasional kobold or giant rodent or whatever for snacks is great too. Oh! But water creatures make me sick. Some sort of fish allergy, I guess.
  • ::Changes shape again, this time to a large metal box with padlocks all over it::
  • Do you have dogs at your place? Or other pets? There was this time when my wizard made me stay in the barn. He got mad when I ate the dogs, but they kept trying to pee on me! I’m supposed to just stand there and and let those mangy beasts soil my beautiful self?!
  • One time this thing that was all eyes and mouth came wandering in here. I thought maybe with all those mouths that at least one of them could hold a decent conversation, but no … all they did was make horrible noises and slime up the floor. Wish the flood trap would have washed that nasty thing away!
  • Do you have a favorite style of container? A fancy urn or big vase or gold-leafed trunk? I have done some really beautiful artwork with myself, if I do say so myself! Which I DO!
  • Ya know, Kazel use to keep all of us right in front of his hidey-hole, but got tired of moving us around every time he wanted inside. He was so pleased with himself when he finished that stupid flood trap. Took him years.
  • So … food? …
  • Kazel’s old adventuring buddies used to capture critters and bring them here all the time. Then they’d brag about the good old days while chasing them around the tunnels, killing them. When Foreshot found out, she was so mad that she blew up a tunnel from the forest in just to keep them from smuggling more down here.

Once the group is ready to go, Gruber spouts hundreds of tiny legs underneath his carriage and starts shuffling off. Gruber is not a fast walker, and with his starving state, moves even slower than usual (10 ft). He does keep up a constant patter of chatter when you walk. And even if you tell him to be quiet, he’ll start up again after a few moments.

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