Refers to a person who is well-liked by many people, often in a social, school, or workplace context.
彼はクラスの人気者だ。
He is the popular kid in the class.
あの新人はすぐに職場の人気者になった。
That new employee quickly became the favorite at the workplace.
He's the popular kid in class.
She sings well and quickly became popular at school.
Mr. Tanaka is popular at work.