These are the villains that were posing threats to the protagonist and anti-hero, Wario (and occasionally Waluigi) when they either rule the world or steal treasures from him.
“The Black Sugar Gang (also called the Brown Sugar Pirates in the original English release) is a...Black Sugar Gang
“Tatanga is an alien invader who acted as the main villain during the events of Super Mario Land...Tatanga
“ Catbat is one of the bosses that makes an appearance in Wario Land 4. The Catbat is the boss...Catbat
“King Boo is a character who appears as a minor antagonist in the Mario series. He is the leader...King Boo
“ Muncher the King is the first boss and the main antagonist of the microgame Super Wario Bros.Muncher the King