Bonner was born in Melbourne and lived in Belgrave, Victoria. He is the son of actress Carla Bonner and has a brother Jhye, born January 1998. In September 2014, it was revealed that Bonner was dating his Neighbours co-star Ariel Kaplan, who played his twin sister Imogen Willis in the show. In 2016, Bonner relocated to Los Angeles with his girlfriend Kaplan.
Bonner had a guest role in House Husbands in 2012 and appeared in the documentary series Creative Kids in 2014. He joined the cast of Neighbours in 2013. He originally refused to be on the show, but changed his mind when he was cast as Josh Willis., a role he played until 2016.