Freddie Mercury was known for his incredible four-octave vocal range and flamboyant stage presence. One of his most unique physical traits was his 'overbite,' caused by four extra teeth (supernumerary teeth) at the back of his mouth that pushed his front teeth forward. Despite having the financial means to fix his smile, Mercury famously refused to have any dental work done. He was deeply afraid that altering the shape of his mouth or the alignment of his teeth would negatively affect the resonance and 'timbre' of his voice. He believed that the extra space in his mouth contributed to his unique sound. His iconic look became a symbol of self-acceptance, and his voice remains one of the most celebrated in rock history.