The Thor is an experimental terminator tank that's equipped with a heavy lightning cannon, dual EMP lasers, and an EMP missile launcher.
You can launch the EMP missile manually by pressing D and selecting a target.
Perfect as a front line unit and close quarters combat.
It can stun enemy units while dealing some of the highest DPS in the game, and has plenty of health for tanking incoming fire. However, it is relatively slow and vunerable to bombers.