William Baker

The Sandman is a fictional super-powered villain featured in comic books published by Marvel Comics. His real name is William Baker, but he has also gone by the alias Flint Marko. The character was created by writer Stan Lee and artist Steve Ditko and first appeared in Amazing Spider-Man, Volume 1 #4, cover-dated September, 1963. The character has frequently been shown as an adversary of Spider-Man as well as the Fantastic Four. He was a member of the supervillain team the Frightful Four as well as the Sinister Six. For a brief period, he was reformed and became a member of Silver Sable's Wild Pack.

Powers

 * Body conversion: The Sandman has the ability to transform his entire body into silicon particles, which he can manipulate to form a wide variety of shapes. He could also use this power to enlarge his own mass and project columns at sand at opponents or erect barricades of sand.
 * Density control: The Sandman can increase or decrease the mass and density of his body allowing him to perform various feats of super-strength. Getting punched by one of the Sandman's fists is not like getting slugged by a regular joe. If he maximizes the density of his sand-fist, he could pound you into dip.
 * Reformation: The Sandman has learned how to reconstitute the molecules of his body to re-assume his normal human shape. This trick becomes quites necessary in instances when the particles of his silicon body become separated or if they are mixed with another substance such as water.

Other versions

 * Sandman, A supervillain featured in the 2007 film Spider-Man 3.
 * Sandman, A supervillain featured in the Ultimate Universe.
 * Sandman, A supervillain featured in the 1967 Spider-Man animated series.
 * Sandman, a supervillain featured in the Spider-Man and His Amazing Friends animated series.
 * Sandman, a supervillain featured in the Spectacular Spider-Man'' animated series.