Micronaught adventurers are never found outside of a containment shell or puppet automaton—called a Shell—sized for interaction with the normal world. A Shell has no mind of its own; it is an extension of you. While inside the Shell:

• You count as Small or Medium (your choice at creation).

• You can choose any racial "chassis" for the shell (aesthetic and mechanical theme).

• If the Shell is reduced to 0 HP, you must make a DC 10 Dexterity saving throw to escape before it collapses. On failure, you take 2d6 damage and are considered incapacitated (you’re essentially a speck hiding).

Your brain computes on quantum-alchemical levels. You have advantage on Intelligence checks made to understand, decipher, or repair any kind of magic or technology, no matter the origin.

You have proficiency in two of the following: Arcana, Investigation, or Tinker's Tools. You cannot forget anything you have studied for more than 10 minutes.

You may take the Help action as a bonus action if you are inside another creature’s space (like hiding in a boot, armor, or on their weapon). You can climb surfaces and creatures without needing to make a check, unless the DM rules it too hostile (e.g. lava).

Because of your size, you experience the world differently:

• You cannot wield normal weapons unless specially made for you or the Shell.

• You can hide in almost anything: a pouch, a pocket, a sandwich.

• You take quadruple damage from area effects (like Fireball) unless you are fully shielded.

• Enemies must succeed on a Perception check contested by your Stealth to even notice you outside of your Shell.

• You are immune to fall damage from distances under 200 feet—air resistance saves you.