Chuck the Dwarf was created by the cloning division of S.H.I.E.L.D. who used mutated rat and lizard DNA to create him. The Beast later corrupted him and made him his servant.
Chuck the Dwarf was created by legendary comic writer Frank Miller and artist Bill Sienkiewicz.
Major Story Arcs
What We're Fighting For/Vox Populi/Hail to the Chief
The Beast corrupts Chuck who then aids him in seducing Arthur Perry into The Hand. Chuck then takes Perry to the Beast before Chuck grants Perry extra powers. However, Elektra later decapitates Chuck.