The Crime Syndicate

The crime syndicate was an organization formed by Joker in collaboration with the Chameleon.

Members

 * Joker
 * Chameleon
 * Peinguin
 * Riddler
 * Mr. Freeze
 * Poison Ivy
 * Mad Hatter
 * Harley Quinn
 * Scarecrow
 * Bane
 * Man-Bat
 * Killer Moth
 * Cat-Man

Plot
Chameleon and the Joker created the Syndicate to benefit both of them. Joker could receive more payment and Chameleon could use it as a front for his operations. Joker was the false leader while Chameleon was really behind it all.

However the group was stopped by Batman, Nightwing, and Robin and most were arrested or killed. The Syndicate disbanded after this.

Status
The status of each of the group members is as follows
 * Joker: Shot and killed by Nightwing
 * Chameleon: Accidentally shot by Mr. Freeze but survived and got away, was later killed by the Abomination being ripped in half
 * Penguin: Neck snapped by Batman
 * Riddler: Punched by Batman
 * Mr. Freeze: Cold tank broken by Nightwing, died of warm temperature
 * Poison Ivy: Hair ripped out by Batman
 * Mad Hatter: Head given fatal concussion by Batman
 * Harley Quinn: Head ripped off by Batman
 * Scarecrow: Butt of gun stabbed in forehead by Batman
 * Bane: Minor Wounds from scuffle with Nightwing
 * Man-Bat: Shot by Nightwing
 * Killer Moth: Minor back wounds from Nightwing
 * Cat-Man: Died of frostbite from being frozen by Mr. Freeze