The three characters are Soviet tanks from the game War Thunder in female forms. The tanks are the T-34 (1942), a slim and kind girl with yellow hair, has a 76mm gun and she is calm and powerful. The other is the SU-122, she is a short girl, but aggressive due to her armor and she is fast and her attacks are strong. The last one is the KV-1, she is the tallest girl, has long white hair, big chest, big thighs, extremely slow but strong and muscular. The three are best friends.