Biggest villain Group in anime history

[Revolved101]

If you had to choose one villain group in anime history who do you think it will be for me it will Akatsuki

I mean come on the theme

 

[Demon_Skeith]

I want to say the group from Hunter x Hunter, but not enough info on them. I do want to say Akatsuki, but I feel like they fall apart at the end.

 

[Grungie]

Reika Kitami’s Witchcraft Group