Joker Venom

Joker Venom is the Joker's signature weapon and is a toxin that is his favorite murder weapon.

Lethal
Contact with the Joker Venom causes uncontrollable spasms of laughter, followed by a painful death. It hyperstimulates the laughter functions of the brain, leaving the victim unable to breathe. Victims often exhibit a grotesque grinning expression due to spasms of the facial muscles.

Non-Lethal
The venom causes uncontrollable laughter but instead of dying, their faces are usually pulled into an unusually large grin as well as gaining yellowed teeth, bulging eyes and paleness and the victim is put into a coma. Prolonged exposure to non-fatal forms can cause permanent brain damage.

Uses
Being highly insane and intelligent, the Joker had many ways of using the toxin and can be administered in several ways:
 * Introduced into food or beverages
 * Hidden in hygienic products
 * Injected into the bloodstream
 * Applied to projectiles including bullets and darts
 * Aerosol form including gas, smoke and mist

Cure
Batman was able to develop an antidote for the venom, which was usually applied with an injector. This saved many lives, including his own on several occasions. It can also break victims out of comas when the non-lethal venom has infected them.