An ambush unit, the Dweller buries itself underground and waits. When an enemy approaches, the Dweller detonates, sending millions of nano-machines flying in all directions. These machines will then merge back together to continue fighting.
Dwellers are great for ambushing, doing a large amount of AoE damage when any enemy happens to walk over them
Dwellers are visible when moving, but are stealthed when planted in the ground
When a Dweller is triggered, it forms into a Small Protean, good for wiping up any enemies not quite destroyed by the initial blast
Dwellers now retain their stealth when they are moving. They still must remain stationary to arm. Best used against bases or clusters of stationary units.
When Dwellers explode they leave behind two Small Proteans. Best used when concentrating on heavy unit production.