Robbie is a new student for the sixth form college, who quickly causes a stir with some bad boy antics.
Although strict headteacher Patrick Blake (Jeremy Sheffield) reckons he can handle Robbie, the teenager wastes little time before getting up to no good - trashing a display at the deli and framing Callum Kane (Laurie Duncan) for it.
Callum finds himself in trouble with Patrick thanks to Robbie's stunt, but the lads look likely to still become friends as Robbie focuses his efforts on leading Callum astray.
Robbie is played by Charlie Wernham, who first hit screens performing as a comedian on the second series of Britain's Got Talent in 2008.
Since Britain's Got Talent, Wernham has branched out into acting with roles on E4's School of Comedy and BBC Three's Bad Education.
As fans already know, Robbie's arrival paves the way for a whole family of Roscoes to join the village - headed up by former EastEnders actress Gillian Taylforth, who plays mum Sandy.
Hollyoaks airs Robbie's first scenes on Tuesday, April 2 at 6.30pm on Channel 4.
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