Claire Rieveldt is the captain of the Railway Military Police, and a supporting character in the Cold Steel arc. She is an ironblood, a group that is loyal to the Blood and Iron Chancellor, Gilliath Osborne. Claire is a very formal person, though can act casual when the situation calls for it, even talking to a couple of the members of Class VII in casual attire. She is assertive, and gets straight to the point when necessary. 

Claire has a medium, mature sounding voice. She has a formal tone, though with a slight hint of energy, albeit not much. Her emotions will typically consist of surprise, being formal, and assertive.