Gremlin is a stealthy tank equipped with light plasma weapon. It doesn’t stand a chance facing other T2 units with it's weak armor and a low rate of fire.
Be mindful of its energy consumption when cloaked (-5), especially while moving (-20).
Gremlins are very good at assassinating (unaware) Commanders.
Without the enemy Commander using his D-gun, 4-6 gremlins will likely pull off a Commander kill.
Use packs of 4-6 Gremlins to sneak in beyond enemy defense lines, get intel on plans and sabotage the economy.