Translation of "guy" into Chinese

I want you guys to do me a favor.

我想要大家伙帮我个忙。

There's a guy in my yoga class.

有个小伙子在我的瑜伽班里。

You know, the guy who left his tuxedo with you.

你 的 朋友 , 他 在 你 這 裏 寄放 了 一件 衣服 。

Guy makes no money, has no education, doesn't speak the language.

盖伊 是 没有 钱 , 没有 学历 , 不 说话 的 语言 。