A human being is called a person, and while this applies to an actual individual, it also, in grammar, means the type of person — first person being "I/me," second person being "you," and third person being "he/him," "she/her," or "they/them."
The Latin persōna referred to an actor's mask that created the character being played. This later came to mean "human being," a meaning it still conveys. You can also use it to refer to a person's physical body. I wouldn't recommend crossing the border with any illegal items on your person. Nowadays, the word person replaces "man" to avoid sexism in words such as "congressperson."