4 sentences

1. 他是个无恶不作的恶人。

   tā shì gè wú'è​bù​zuò de è​rén.

   He is a villain who stops at no evil.

   Source: Dong Chinese Dictionary

2. 传说雷公打雷是为了惩罚恶人。

   chuán​shuō Léi​gōng dǎ​léi shì wèi le chéng​fá è​rén.

   Legend has it that Lei Gong thunders to punish the wicked.

   Source: Dong Chinese Dictionary

3. 只要好人袖手旁观，恶人就会得胜。

   zhǐ​yào hǎo​rén xiù​shǒu​páng​guān, è​rén jiù huì dé​shèng.

   As long as good people do nothing, evil will triumph.

   Source: Tatoeba

4. 在有些古籍中，恶人是指长相丑陋的人而非坏人。

   zài yǒu​xiē gǔ​jí zhōng, è​rén shì zhǐ zhǎng​xiàng chǒu​lòu de rén ér fēi huài​rén.

   In some ancient texts, the term for 'evil person' refers to someone who is physically unattractive rather than someone who is wicked.

   Source: Dong Chinese Dictionary