Bowling Ball "Mary" is a female bowling ball in Ball World.
Bowling Ball is a pink-clouded bowling ball with mint green eyes and dark red lipstick. On her forehead in the number 12 with a circle around it. She also speaks with a Southern accent.
Bowling Ball, though meaning well, is terrified of the hunters after they attack the herd and deflate Beach Ball Grandpappy. Taking Grandpappy's words to heart about running away, Bowling Ball is strongly against fighting the balls back and endangering themselves to getting hurt or killed. She doesn't agree with Penn telling the balls to defend themselves, eventually leading her to abandon her herd and her love, Eight Ball. However, she realizes she is wrong to avoid problems instead of dealing with them, so she returns to save 8 Ball and the herd.