There is, of course, no such as thing as 'overnight success' in comedy and, when a comedian appears to come out of nowhere, in truth they've most likely been plugging away on the circuit for years, honing their craft. Having said that, Rob does appear to have been somewhat fast-tracked through showbiz, as if he'd won some sort of apprenticeship to the 'Big Time'.
Born in South London - no surprises there - Rob grew up in a big family who, he says, were all as funny as him. Whilst living in a grotty flat in Lewisham and doing all sorts of low-paid, dead-end jobs, Rob was inspired to try comedy after seeing a terrible act at an open mic gig and thought there was no way he could be as bad as that.
Where have you seen Rob before?
He was right - he started performing stand-up in 2009 and won a handful of new comedian competitions in his first year including the Amused Moose Laugh-Off. In 2010, he was runner-up in the prestigious So You Think You're Funny contest which led to an invitation to perform at the Adelaide Fringe Festival in Australia.
By 2012, he'd put together his first Edinburgh Fringe Festival show and, later that year, he joined Laura Whitmore and Joe Swash to host the ITV2 spin-off show I'm a Celebrity...Get Me Out of Here! NOW!
After popping up on pretty much every panel show under the sun, plus hosting Absolute Radio's Rock'N'Roll Football Sunday show and Dave's comedy football podcast The Magic Sponge, Rob eventually left I'm a Celebrity to become one of the new team captains on 8 Out of 10 Cats.
Oh, and he also performed in his very own 2017 BBC sitcom pilot, Static, and is soon to host a new BBC One Saturday night entertainment series called All Together Now. Not bad going for a humble, working class geezer who thought he would be the happiest man in the world if he could just about make a living in comedy.
So, what has been Rob's crowning achievement amongst all this success? What is the thing he's most proud of in his career so far? Well, it has to be winning Series 3 of Dave's very own Taskmaster. We don't actually know that for a fact. We're just guessing. But it's definitely, definitely that.