Gaz - played by Joel Goonan - has been absent from screens since August, when he ended up in prison as his wayward behaviour came back to haunt him.
PJ Brennan's character Doug, meanwhile, was introduced as a new student in September, but he left the village in disgrace at the end of Freshers' Week when he was exposed as a drug dealer.
Speculation that both characters would return began yesterday when fans spotted that Goonan and Brennan both appear in a special Christmas music video recorded by the Hollyoaks cast.
Gaz's return will be a cruel blow for Anita Roy (Saira Choudhry), as he previously tormented her with racist bullying for months, pushing her to the edge.
Doug is also unlikely to receive a warm welcome back to the village following the devastating impact of his previous stint, which resulted in no-nonsense Carl Costello (Paul Opacic) warning him to pack his bags or else.
A Hollyoaks source told DS today: "Much to Anita's concern, Gaz will be making a shocking return to the village in the weeks ahead. Doug will also be coming back, but the details of how, why and when he returns are currently being kept under wraps."
> Click here to watch the Hollyoaks Christmas video