A combat medic who served in Operation Ghosthammer, Lieutenant Keito Nakayama is the Patriots' only dedicated healer, and he's not very good at it yet. He was taught hassat-durr by Kalo-Kaa, and discovered a way to use it in conjunction with the Uul'ba-Rai physiology. He learned more about healing from the Nuns of G'aav'aar'oon at the Convocation on Dieron.