Outside of football, Robertson is a musician, who has abilities in singing and playing guitar, modelling and has become somewhat of a television personality.
He was featured in The Footy Show Screamers talent quest competition.
Robertson released an album titled Higher in 2008.
On 26 October 2006 Robertson married former Melbourne Storm cheerleader and aspiring actress Brooke Aust.
In February 2008 he was a contestant on the Australian television show Deal or No Deal.
Robertson also made an appearance in 2008 singing on the Australian television show It Takes Two with partner Kate Ceberano in which they were runners-up.
In 2012, Robertson re-joined the Melbourne Football Club produced his own show “The Robbo Show” for the Melbourne website and is a regular MC at Home matches at the MCG. He took over the role of Club Development Manager after the suspension and subsequent sacking of Chris Connolly for his role in the tanking scandal.
In 2012, Robertson starred in Barassi – The Stage Show, about Ron Barassi.