History
When Apocalypse started his plans for world domination, he captured four people who he saw as being good enough to be his Horsemen and corrupted them. Blob became the Horseman known as Famine.
Famine was one of the Horsemen Deadpool, Cannonball, and Siryn encountered in their alternate reality search for Cable.
And even though Famine was accompanied in the fight by Pestilence and Archangel, all three of them were defeated.[1]Attributes
Powers
Gravity Increase: Blob is immovable.[1]
Blob's powers were likely augmented by Apocalypse to an unknown extent when he became a Horsemen.Paraphernalia
Weapons
Giant hammer