Lord Voldemort(Tom Marvolo Riddle)
Bellatrix Lestrange
Lucius Malfoy
Narcissa Malfoy
Bartemius Crouch
Peter Pettigrew
Cornelius Fudge
etc.
The Wicked Witch of the West (Wizard of Oz, 1939) and Darth Vader (Star Wars).
The Dirty Bubble, Ray man, Plankton, and a few others ( I think )
Some of them include The Joker, the Penguin, Killer Croc.
disney villains
Catwoman, Harley Quinn are recorded, but he probably fights many other Justice League ns
The internet and time are the villains against me now. Sauron and Darth Vader are great villains. They've eaten all my cookies, those little villains.
Villains by Necessity was created in 1995.
Villains' Lorebook was created in 1998.
City of Villains happened in 2005.
the villains in batman returns are penguin and catwoman
Villains United happened in 2005-07.
There is no standard collective noun for a group of villains. The collective nouns for thieves can be used, for example a den of villains or a gang of villains. Or, since collective nouns are an informal part of language, any noun that suits the context or suits your fancy can function as a collective noun; for example, a collusion of villains or a connivance of villains.