Gregory Collis was an Australian actor and performer who carved out a notable career in film and television during the late twentieth century, though his life was tragically cut short at a young age. Born on November 19, 1951, in Sydney, Australia, Collis grew up with a passion for the arts, which led him to pursue acting professionally. He is best remembered for his role as the character Tim in the iconic Australian film Mad Max (1979), directed by George Miller and starring Mel Gibson. In this post-apocalyptic action classic, Collis played a member of the Nightrider's gang, appearing in the film's early scenes that helped establish the gritty, dystopian world. His performance, though small, contributed to the film's cult status and enduring legacy as a landmark of Australian cinema.

Following his work on Mad Max, Collis continued to build his resume in the Australian entertainment industry. He appeared in the television series Prisoner (also known as Prisoner: Cell Block H), a popular Australian soap opera that ran from 1979 to 1986, where he took on guest roles. He also featured in the film The Survivor (1981), a supernatural thriller directed by David Hemmings and starring Robert Powell and Jenny Agutter, which told the story of a pilot who survives a plane crash only to be haunted by visions of the dead. Additionally, Collis appeared in the Australian television movie The Highest Honor (1982), a war drama based on true events, and had roles in other local productions such as the series The Sullivans and Country Practice. His career, while not extensive, showcased his versatility in both film and television genres.

Tragically, Gregory Collis passed away on July 9, 1985, at the age of 33, under circumstances that remain largely private. His death marked the end of a promising career that had shown potential for growth within the Australian entertainment landscape. Despite his brief time in the spotlight, Collis is remembered by fans of Mad Max as part of the film's ensemble cast that helped launch the franchise into international acclaim. His contribution to Australian cinema, particularly through his involvement in one of the country's most celebrated films, ensures his place in the annals of film history, even as his life remains a quiet footnote in the broader story of Australian acting.