Sometimes she is known to be the perfect soldier in the Amestris Military. First lieutenant Riza Hawkeye is known to be the aid subordinate of Roy Mustang. She is skilled in the works of firearms, such as pistols, rifles, shotguns, and snipers. From her gun shooting skills, it always gives her a better reason for her last name to be 'Hawkeye' as in the manga even Jean says that she has an 'Eyes of a Hawk'.
Before she did not have long hair. She had short hair at the beginning, but she still have those bangs of hers. She was only a Second Lieutenant back then. But soon she got a promotion as well as Roy Mustang, going to the rank of Lieutenant Colonel to Colonel. Sometimes you'll always see her with a folder in her arms, alwasy beside Mustang. She looks known to be a very hard worker, and does what she can to help her superior officer. Another one of the things about her is she slightly knows Roy's weakness. She displays is tripping Mustang from thinking he can snap his fingers in the rain. Mustang does tend to do rash decisions and later on she helps him realize that even more.
In almost everything, she is known to use disguises. In the manga and even in the game, she uses glasses to give her a different look. She usually has her hair down and wears something different than her uniform.
Of course, above all, she meets Black Hayate, the small canine. I think they brought the canine dog to show how much of a heart she really can have. She takes care of it and it is very well obedient. He is in a way, their mascot to the Military.
Despite it all, you can see a slight relationship between her and Roy. It doesn't show it 'as' much as most would like to portray, but we do have an idea that she cares for Roy Mustang more than meets the eye. She doesn't really like the military and joined to protect him. Sometimes we wonder if it will be shown more in the manga. I hope they do something about that.
Riza Hawkeye is indeed a worthy subordinate in Roy Mustang's team. Shooter, Dog carer, working soldier, aid to Roy Mustang.