A girl who Joseph saved in the past and goes to bring about Joseph to his senses while sustaining heavy injuries in the battle with him. Eventually, she succumbs to Josephs power and reverts to human form, Joseph continues his attack until Snow speaks with her last words "It's not your fault, none of this is your fault. Don't be afraid, just live." Joseph said the same thing to her, he then reverts to his human form as Snow slowly passes away. She seems to show some affection for Joseph as seen in episode 19. (Source: Wikipedia)
Snow Dancers were creatures sent by Princess Snow Kaguya to prepare the Earth by covering it with snow. They appeared to be made of ice and attacked by throwing ice and snow, freezing their opponents who were hit. (Source: WikiMoon)
Princess Snow Kaguya is the main antagonist of the movie and its manga counterpart. She is a powerful alien entity that travels by comet from planet to planet, freezing them and making them part of her "collection."
Memory Gene is responsible for the creation of the Borgman trio. She handles reconnaissance and is responsible for bestowing the use of the armor to Chuck, Ryo, then Anice. Memory did not actually create the technology, her teacher whom she was in love with did.