Benjamin Malartre Bureau (aka benofk_funko) posted a message on his Instagram account claiming that he spent four "crazy" days on the X-Men: Apocalypse set, where he hung out with Jennifer Lawrence (Mystique), Ben Hardy (Angel), Kodi Smit-McPhee (Nightcrawler), Nicholas Hoult (Beast) and a unnamed French-Canadian actor playing ... The Blob!

Additionally, The Blob/Frederick J. "Fred" Dukes won't be computer-generated nor is there a need for a fat suit as Benjamin estimated that the actor playing the role weighed more than half a ton.

The immovable mutant made his feature film debut in Gavin Hood's 2009 superhero film X-Men Origins: Wolverine. He was played by Kevin Durand (Vikings), who wore prosthetics and a fat-suit to mask his much-leaner frame.

The robust mutant with superhuman strength and endurance, can generate a gravity field -- as long as he's in contact with the ground -- that renders him virtually immovable. His blubbery skin has an elasticity that is virtually impenetrable. He'll obnoxiously laugh off gun shots, missile attacks and even a good clawing.

Note: In the comics, The Blob was depowered during the Decimation (2005) storyline, but more recently he gained his powers back with the help of Mutant Growth Hormones (MGH).

Check out his original post below, which shows Ben holding an X-Men: Apocalypse souvenir from his set visit.

X-Men: Apocalypse is being directed by Bryan Singer (X-Men: Days of Future Past), based on script written by Simon Kinberg (Fantastic Four). The cast includes Jennifer Lawrence, Olivia Munn, Rose Byrne, Michael Fassbender, Sophie Turner, Oscar Isaac, Kodi Smit-McPhee, Nicholas Hoult, Evan Peters, James McAvoy, Tye Sheridan, Alexandra Shipp, Lucas Till, Ben Hardy, Josh Helman and Lana Condor.

Check out when X-Men: Apocalypse and other movies are coming out in ComicBook.com's Movie Release Schedule.