AD-58415 is a red blood cell. She's not like other red blood cells she is energetic hot-tempered and pretty violent. She often studied self defense so she could protect herself and her friends so she wouldn't have to rely on neutrophils. She is very strong and can beat most bacteria and immune cells. She also encourages other cells to be themselves and have fun doing their work like she does as long as it doesn't get in the way of their work. Which in her opinion never does. Due to her unusual personality and actions the other cells would call her many mean names but the one they called her the most was crazy. However it never bothered her so she decided to change her name to the insult she got everyday to show how little their words hurt her. This both inspired cells and freaked them out making them think she's a mutation. She has only one friend. AE-3803 who was also bullied a lot by their fellow red blood cells. Read as Crazy changes her world for the better while helping her best friend get together with the white blood cell of her dreams despite her fear of her abandoning her after they get together.