The actors gathered with stars including James MCAvoy, Michael Fassbender, Jennifer Lawrence and Nicholas Hoult, who played the characters' younger selves in 2011 blockbuster X-Men: First Class, at the huge convention in San Diego, California on Saturday (20Jul13) to promote their new superhero movie.
The cast will come together on screen in X-Men: Days of Future Past, but the Comic-Con outing marked the first time many fans had seen the younger castmembers come face to face with their older counterparts.
During a panel discussion, gay star MCKellen referenced California's recent law-change over same-sex marriage and jokingly propositioned Fassbender, who plays a younger version of the veteran star's character, Magneto, saying, "I feel safe here now that you got rid of Proposition 8... I'm looking for a husband - it's great to meet you Michael."
Jackman, who also stars in his own Wolverine spin-off movie series, thrilled the crowd by revealing he dressed up as his superhero character and wandered around the convention unnoticed, although he revealed two people did stop to comment on his costume: "One said 'Eh, not bad.' The other said, 'Way too tall'."
The event marked Berry's return to the spotlight since marrying actor Olivier Martinez in France earlier this month (Jul13), while it also reunited former lovers Jennifer Lawrence and Nicholas Hoult, who began dating after meeting on the set of X-Men: First Class, but split late last year (12).
Anna Paquin, Ellen Page, Shawn Ashmore, and Peter Dinklage were also in attendance along with director Bryan Singer.