Stun gun
Stun-guns were used by the War Lords. Despite their name, they had a kill setting. (PROSE: The War Games [+]Loading...["The War Games (novelisation)"])
Torchwood Three utilised a type of stun gun. (TV: They Keep Killing Suzie et al.)
The World Space Patrol used stun guns in the 2060s. Steve Zodiac was armed with one when he investigated an adrift space freighter in January 2065. He was attacked by Batmen as he approached and managed to shoot one of them, causing the rest to retreat further into the ship. Later, while Steve, Doctor Venus and Professor Matic left Fireball XL5 to search a Batman-occupied asteroid, Robert the Robot guarded Fireball with a stun gun. The leader of the Batmen subsequently captured Venus and threatened to kill her if Steve did not disarm Robert and surrender Fireball, forcing him to order Robert to stand down. (COMIC: The Batmen)