Sir Howard Walter Florey was an Australian pharmacologist and pathologist who is best known for his incredible contribution to the development of penicillin as a life-saving drug. While he is often referred to by his full name, there are a few synonyms that can accurately describe his accomplishments and legacy. Some may choose to call him a medical pioneer or innovator for his groundbreaking work in the field of antibiotics. Others may refer to him as a hero for his efforts in developing an effective treatment for infectious diseases that have saved countless lives. Regardless of the terminology used, Sir Howard Walter Florey's impact on medicine and history is impossible to ignore.