Siegfried Fischbacher was a German-American magician and entertainer best known as one half of the legendary duo Siegfried & Roy, a partnership that redefined Las Vegas spectacle for decades. Alongside his lifelong collaborator and romantic partner Roy Horn, Fischbacher built one of the most successful and recognizable stage acts in entertainment history, famed for flamboyant, Liberace-style costumes and the dramatic use of white lions and white tigers. As the magician of the pair, Siegfried provided the illusion and showmanship while Roy served as the animal trainer, together creating a brand of grand-scale fantasy that captivated millions of spectators.

Born on June 13, 1939, in Rosenheim, Germany, Fischbacher developed an interest in magic at a young age. His life changed in 1959 when he met Roy Horn while both were working aboard a cruise ship. The two quickly discovered a shared ambition and began performing together, first on ships and later in European clubs and theaters, steadily refining the act that would eventually carry them across the Atlantic. In 1967, the duo received an invitation to perform in Las Vegas, a turning point that launched their rise to international fame.

Beginning in 1990, Siegfried & Roy headlined a spectacular show at The Mirage in Las Vegas. The production became a cultural phenomenon, and by 1999 it had grossed an estimated $500 million, making the pair the highest-paid entertainers in Las Vegas at the time. Their elaborate illusions and majestic white tigers became synonymous with the city's entertainment identity, and the duo performed an extraordinary 5,750 shows together. Their career came to an abrupt halt in 2003 when Horn was critically injured by a tiger during a live performance, an incident that ended their performing run.

Though the pair promoted animal conservation and the rehabilitation of endangered species, they also drew criticism from animal welfare advocates who objected to the use of animals "as props" and questioned the unnatural environments in which the creatures were kept. Horn died in 2020 from COVID-19, and Fischbacher passed away on January 13, 2021, from pancreatic cancer. Together they left behind a legacy as one of the most celebrated and commercially successful entertainment acts ever to grace the Las Vegas stage.