It goes without saying that you don't gain millions of followers on social media for no reason at all. In Calum's case, the bodybuilder has been working diligently for years to establish himself in the field. Per Wikipedia, Calum's first major accolade was when he came first in the NABBA Junior International Championships held in Melbourne in 2011.

As Calum's notoriety in the world of bodybuilding grew, he took his talents internationally. Over the years he secured winning titles in a variety of famous competitions spanning Australia, Austria, South Korea, France, and the U.S. In October 2014, Calum decided to move to Los Angeles to further his career. By 2018, he was cast as a young Arnold Schwarzenegger in the film Bigger, solidifying his fame beyond the bodybuilding world.

In October 2021, Calum returned to Australia and opened a gym.