"狠角色"（hǎn jiǎo sè）是中文语言中的一个术语，意思是一个坚强而有决断力的人物。在英文中，可以用下列几种方式来表示这个意思：

Tough character: 这是一个常用的表示坚强的人物的说法。

Strong-willed character: 这是一个描述一个有决断力的人物的常用说法。

Resolute character: 这是一个描述一个坚决的人物的常用说法。

Determined character: 这是一个描述一个坚定的人物的常用说法。

例如，你可以说：

"She's a tough character. She never gives up, no matter how difficult things get."

"He's a strong-willed character. He always sticks to his guns and doesn't let anyone sway him."

"She's a resolute character. She knows what she wants and isn't afraid to go after it."

"He's a determined character. He won't let anything stand in the way of his goals."