James Sutton has been back on set at the Channel 4 soap in recent days, having agreed to reprise the role after four years away.
Little is known about John Paul's return storyline, but it is thought that he will be back on screen in time for Christmas and remain back in the village for the foreseeable future.
John Paul is remembered as one of Hollyoaks' most popular characters, and his relationship with Craig Dean (Guy Burnet) resulted in a significant fanbase of 'McDean' supporters.
Sutton played the role between 2006 and 2008. In 2009, he was cast as Emmerdale's Ryan Lamb and appeared as the village mechanic until April 2011.
In recent months, the 29-year-old has made appearances on a number of shows including Holby City, Scott and Bailey and Bedlam, as well as launching his own pop-up acting company Broken Leg Workshops.
Sutton had often said that he was open to returning to Hollyoaks for the "right" storyline and entered talks with the programme's chiefs earlier in the year.
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first look screenings at 7pm on E4.