A scoundrel or rascal; a person or group who does evil deeds (often derogatory, used in conversation or literature).
領主は村人を苦しめる悪党どもを討伐した。
The lord defeated the villains who were tormenting the villagers.
あの一味は町の悪党として知られている。
That gang is known as the town's scoundrels.
子どもたちは物語の中の悪党を嫌っていた。
The children disliked the villains in the story.