Changeling

The changeling is a zerg spy produced by the overseer. It is a very weak and unstable creature with a short lifespan. The lifespan is measured by a decreasing bar visible on the interface below the name, and it will die when the bar is zeroed.

Shapeshifting
The changeling shifts its appearance to match the appearance and color of an enemy unit within twelve spaces as an active ability. (Otherwise it will be attacked by the enemy.) It will only change into a basic combat unit (so if it approaches a stalker, it will resemble a more basic zealot instead). It will also change in response to approaching a building (it will turn into a marine if it approaches a barracks, for instance). Once transformed, it cannot change back.

A transformed changeling will use the wireframe and the portrait of the unit assumed by it. A normal changeling will use its own wireframe and portrait (zergling in the current build).

The changeling has no attack; any weapons it appears to carry are false.

Changelings do not display special abilities such as burrow or a zealot's charge, and do not automatically undergo visual upgrades such as wearing a marine's combat shield when upgraded. Re-creating the changeling will show the appropriate visual upgrade.