Last year's The Greatest Showman was the Kiwi's first big screen role.
The film — which also starred Hugh Jackman, Michelle Williams, Zac Efron and Zendaya — was nominated for Best Original Song at this year's Oscars.
He has also appeared in several episodes of Australian soap Neighbours, as well as a number of theater productions.
The 4'2" star was born with a rare genetic disorder called acrodysplasia, which prevents proper formation of parts of the skeleton.
Coupled with his childhood diagnosis of Crohn's disease, he spent much of his early life in and out of hospitals; doctors did not expect him to reach his teen years, let alone adulthood.
He previously revealed he had attempted suicide several times, but eventually overcame his disabilities to successfully pursue his dream to become an actor.
The real life General Tom Thumb — whose real name was Charles Stratton — was a famous dwarf performer under circus pioneer P.T. Barnum.
