Miki Oyama (大山 美紀, Ōyama Miki) is a one of the hunters chosen by Gantz. She participates in the Dinosaur Alien Mission.
She was the first to recognize Reika while in the room. She didn't contribute at all to the mission or any of the fights, though she did try unsuccessfully to save her friend from the raptors. Despite that she survived the entire dinosaur mission and praised Kurono for his skills, she is shot and killed not soon afterwards by Hikawa and the other vampires.