Reiji Oogami is one of the heroes from The King of Fighters EX2.
Reiji was shows up with a King of Fighters invitation at the home of Kyo Kusanagi, who is living in America. As well as a representative for Chizuru Kagura, he asks Kyo to join him as his teammate in the championship competition so that they are can investigate the waves of mystery that are interfering with the "Orochi" seal.
For the some time, Reiji was rumored to be Chizuru's husband; however, they are actually just friends, and representatives of the same clan. This is why Reiji's daughter is dressed in a similar outfit to Chizuru, and there's a possibly that he's married to someone else or he may not be married at all as he was seen flirting with Jun in the Hero Team's cutscene.
Much like Chizuru, he is focused and serious when it comes to his clan's duties. However, Reiji is more laid back and optimistic, especially with his daughter.