[2] Upon moving to the United Kingdom, after developing his stand-up career, he debuted at the Edinburgh Fringe in 2010 with his solo show, A Nifty History of Evil.

[12] Players are selected from the audience are invited to choose between multiple options on screen to advance, and escape the initial room they awake to find themselves in.

[23] Robertson first appeared on television in 2003 on Australian Idol, giving an over-the-top performance of Surfin' Bird by The Trashmen, which ended in him feigning a seizure to prank the judges.

"[27] The Age described Robertson's 2012 show Disturbing Stories for Disturbing Bedtime as "astute, amoral comedy for the morbidly inclined," saying that "his material — whether he's dissecting modern drama or advocating the murder of The Sound of Music's Maria Von Trapp – is edgy, intelligent, and smoothly delivered, though the appearance of a ukulele feels like a hangover from an earlier show, and a late moment of sentiment is a touch too contrived.

[29] Robertson married fellow performer Jo Marsh (alias JoJo Bellini)[30] in June 2013,[24] and currently lives in London, United Kingdom.