The Legion of Doom is the team of super-villains, formed to oppose the Super-Friends, first appearing in the DC universe, as one of the major antagonistic factions. The Legion seems to have variety of super-villains, depending on the incarnation of the DC series. The resulted adaptation of the faction, from the animated feature film, Justice League: Doom, appears in much efficient role in the Non-Disney vs. DC Villains War.
They are also confirmed in Disney Vs DC Villains War being the largest faction of villains controlled by DC Hades and Lord Havok in divisions of the Legion of Doom being their teams possibly this group has an internal circle that controls the other groups within this great faction.
The Legion of Horribles are the main group of antagonists during the second half of the fourth season of Gotham up to "That's Entertainment" . They may be the series version of the insane DC supervillain team called the Legion of Doom.
Lex Luthor (Leader of the faction,creates the faction to kill his greatest rival,was betrayed and killed by Humanite)
Mercy Graves (Assistant of Lex Luthor that most likely left the faction)
Kingpin (Great friend of Lex Luthor that manages to become The Mob Ruler,was arrested alongside other members)
Kingpin's Minions (Soldiers that must protect Kingpin,were taken down by The Pack)
Catwoman (Thief hired by Luthor to steal from Dr. Drakken, was captured by Shego and was used as to test some chemicals, later on escaped and rejoins the faction and usually serves as a spy,fate unknown after she fall from the tower)
Injustice Gang (Gang of criminals formed by Lex Luthor,most of them were arrested after being taken down by Xanatos Enterprisses)
Baron Zemo (A baron from Germany that created his own faction and left Amon, joined forces with Lex Luthor to destroy Xanatos,was killed after Demona crushed his heart)
The Masters of Evil (Gang of Criminals created by Baron Zemo to serve Luthor,most of them were either arrested nor killed by Enchantress)
Slade (Former mercenary and ally of The Foot Clan, left the faction to join Lex Luthor and his gang,left the faction a second before the other members were arrested)
Cassandra Jones (The New Lackey of Slade,most likely escaped from her trap and left the faction)
Ebon (Ruler of a certain gang of criminals,joins Luthor to help him defeat Cruella and Xanatos until he was killed by Coldstone)
Doctor Robotnik (Scientist hired by Lex Luthor to help him to stop Xanatos,most likely left the faction after Luthor was killed)
Snively (Assistant of Doctor Robotnik,most likely left the faction alongside his master)
Metal Sonic (A corrupted version of Sonic that was made by Robotnik and Sniverly,was killed by Coldstone)
The Shredder (Leader of the faction,plans his revenge after his daughter was sent into another dimension,joined the faction to fulfill his revenge on Xanatos,was sent into another dimension)
Rand Ridley (Ruler of a secret society that was recruted by Kingpin to join The Legion of Doom,was arrested by Xanatos Enterprisses)
Miss Heed (Recent partner-in-crimme with Rand Ridley,was arrested by Xanatos Enterprisses)
Bear-O (Robot created to defend Rand Ridley,was killed by Shego)
Red Claw (Mercenary that managed to capture Catwoman,was convinced to free Catwoman and join The Legion of Doom by Madame Rouge,was most likely eaten by a gargoyle brought by Demona)
Madame Rouge (Assosiate with The Brotherhood and Kingpin that can be seen recruting Red Claw,was arrested after she was taken down by Jinx)
Dr. Wily (Scientist hired by Robotnik to aid Legion of Doom against Xanatos Enterprisses,was arrested by Dr. Drakken during the final battle)
The Injustice Gang:[]
Lex Luthor (Leader of the gang,gave up his role to Brother Blood)
Brother Blood (Criminal that became the ruler of the gang after he insisted to Lex,was presumably shooted and killed by Xanatos Enterprisses)
Ultra-Humanite (Assistant of Lex Luthor,now became assistant of Brother Blood,decided to reform by trying to help Xanatos to take down the rest of Legion of Doom)
Cheetah (Member of The Injustice Gang,was arrested after she was taken down by The Pack)
Copperhead (Member of The Injustice Gang,was arrested after he was taken down by The Pack)
Shade (Member of The Injustice Gang,was arrested after he was taken down by The Pack)
Star Sapphire (Member of The Injustice Gang,was arrested after she was taken down by The Enchantress)
Solomon Grundy (Member of The Injustice Gang,was arrested after he was taken down by Demona and Thailog)
Gizmo (Member of The Injustice Gang after Brother Blood took control over The Injustice Gang,was arrested after he was taken down by The Pack)
Mammoth (Member of the group after Brother Blood took control over The Injustice Gang,was arrested after he was taken down by The Pack)
Jinx (Member of the group after Brother Blood took control over The Injustice Gang,decided to reform herself by helping Xanatos to rid of other members of The Legion of Doom after she just defeated Madame Rouge only to be arrested again)
The Masters of Evil:[]
Baron Zemo (Leader of the gang,was killed after Demona crushed his heart)
Enchantress (Baron Zemo's love interest,left the faction after Zemo betrayed her)
Executioner (Bodyguard of Enchantress,left the faction alongside Enchantress)