Plasma Grenade

Mainly used only by competent soldiers, the plasma grenade is useful for knocking people out, but is rarely completely lethal. When Tex uses one on Donut, he does not die even though it was attached to his head. This lead to the famous line: "Is it a spider?", because he thought it was a blue spider. Later, he threw one at Tex, with great distance, it killed her. A possible explanation for this would be if Tex was an AI, the plasma could have rendered her robot body useless on contact.