Frederick Dukes

Frederick Dukes or The Blob is a mutant. His mutant characteristic is being very fat with a rubbery skin. He can use this to make himself unmoveable, to absorb punches, and to bounce bullets away.

His name is briefly seen on a list of William Stryker's mutants in X2: X-Men United. His character was also considered for inclusion in The X-Men but did not make it past the concept art which is a hidden easter egg on the original DVD release of that movie.