Legion of Doom
The Legion of Doom is considered the premiere opposition of the Justice League. My first introduction to the Legion of Doom was in the Superfriends series. Superfriends was just a more kid friendly version of the Justice League. The team is often created by Lex Luthor. It generally features villains, Gorilla Grodd, Brainiac, Sinestro, Bizarro, Toyman, Riddler, Scarecrow, Cheetah, Black Manta, Captain Cold, Solomon Grundy and Giganta. Most of the members weren’t used in the Superfriends series, and because it was a kids show the Legion of Doom didn’t do anything too terrible. Even my favorite villain, the Joker has been part of the Legion of Doom. It didn’t end well. In Justice League #13, the Joker gases many of the Legion. He leaves them as laughing lunatics after Lex’s betrayal. He reverses the gas effects, but ends his time with the Legion.
The Legion was updated in the Justice League Unlimited series. The new Legion featured more members. It was more like a “supervillain union” that would aid other villains with criminal activities in exchange of a cut of their profits. This version of the Legion of Doom was lead by Gorilla Grodd, but Lex Luthor started a revolt. He did so because Grodd was plotting to turn humanity into apes. After Lex took over, he use the Legion to gain power for himself. This resulted in another revolt, with several members siding with Luthor and others sided with Grodd. Luthors foolish attempt to resurrect Brainiac, resulted in Darkseid being reborn instead. He repaid them by destroying the Hall of Doom. The Legion joined forces with the Justice League to defeat Darkseid and the Apokoliptain forces. Batman gave them a “five minute head start before the League attempted to capture them,” as payment for their help.