Meet Ibtihaj Muhammad.
As the first American Olympic athlete to wear a hijab, she has a place in history whether she wins a gold model or not.
And as well as being a super-star fencer, she also speaks up for the rights of Muslims in America. As she tells the BBC:
I am excited to challenge the stereotypes and misconceptions people have about Muslim women. I want to show people that we can not only be on any Olympic team, but on the US Olympic team
Part of that role includes taking on Donald Trump - as Muhammad told CNN of his comments on preventing Muslims from entering America.
I think his words are very dangerous. When these types of comments are made, no one thinks about how they really affect people. I’m African-American. I don’t have another home to go to. My family was born here. I was born here. I’ve grown up in Jersey. All my family’s from Jersey. It’s like, well, where do we go?
Muhammad is competing in the women's individual sabre later on Monday - let's hope she's as fierce in the arena as out of it.