The 46-year-old will join on the final day of the three-day occasion which continues to grow significantly with a target of over 50,000 visitors for the 2015 show and an additional 35% of space booked at the Dubai World Trade Center.
The headline guest for this year’s edition beginning April 9, will be all-round legendary performer William Shatner, recognisable to several generations of cult television fans as the square-jawed Captain James T. Kirk.
A number of other guests have also been revealed as well including Karl Urban, well known as Éomer in the Lord of the Rings trilogy, Dr. Leonard "Bones" McCoy in Star Trek (2009), and Judge Dredd in Dredd (2012); along with another sci-fi legend, Sam Jones, best known for his iconic role as Flash Gordon, who made one of the most talked about cameo’s in recent years in the smash hit movie Ted.
Image Comics, the publisher of huge hits like The Walking Dead will also be exhibiting for the first time.
Gillian – who is a mother to three children – is also set to appear at the Comic Con in Dallas, Texas May 29-31.
Recently she has been busy filming the third series of her BBC TV show, The Fall, in Belfast with her co-star Jamie Dornan.
Those who enjoyed The X-Files can expect to see Gillian reprise her part soon after her co-star David Duchovny shared his intention of a show reunion.
David – aka FBI agent Fox Mulder - told The Observer newspaper at the time that the project is on its way.
They appeared together for nine series from 1993 to 2002 but David confessed the new stuff wouldn’t be an entire season as the team doesn’t have the energy for it.