SPAS-12 is an image of the Half-Life 2 SPAS-12 Shotgun, and occasionally other games and images of said firearm. Despite having no limbs or facial features, she is still able to talk.
SPAS-12's bullets are large brass slugs of moderate size; resembling 9mm rounds, and is effective against most targets. SPAS-12 is very happy and positive, as she gets very happy when she sees anyone. SPAS-12 mostly doesn’t understand anything bad happening, such as when she is used to shoot another contestant.