Betty
Background
Betty Foster is 8 and her brother is Billy.
During the events of Santa Claus Conquers the Martians (1964) played by Donna Conforti
Betty and her brother are kidnapped by Kimar, Voldar and Rigna and brought on board their spaceship after they tell Kimar that Santa Claus lives at the North Pole. On the spaceship, Dropo shows them around and when the spaceship lands at the North Pole, they escape after Billy disconnects the ships radar shield. They are forced to hide in a cave when they see a Polar Bear and after it leaves, they leave the cave, but are captured by Torg. They are brought back onto the spaceship and are put into a cell. When Santa is brought on board, he tries to cheer them up by telling them a funny story, but it doesn't work. Voldar takes Betty, Billy and Santa on a tour of the ship and then locks them in the air lock. Voldar opens the door to the air lock into space, but Betty and the others escape by climbing through the airlocks before the door opens. When Betty, Billy and Santa arrive on Mars, they are taken to Kimar's house and are introduced to Momar, Bomar and Girmar. Betty and Billy help Santa and the Martian children make toys for the kids on Mars. When Voldar goes to the workshop to kill Santa, Betty and the other children attack him with toys. After Dropo becomes Santa on Mars, Betty, Billy and Santa return to Earth on a Martian spaceship.