The Mad Monster line has been reproduced by Classic TV Toys as complete figures. This makes for plenty of reproduction parts for this line. This section will help you identify those reproduction parts.
The original Monster line was available on both the Mego type1 and type2 bodies. Mego also released these figures under their Lion Rock name with some differences in bodies and accessories.
Special thanks to Museum Member "Werewolf" for a wealth of Mego Monster information and for filling in some photographic gaps in the section.
The first version of the mego male body was a metal rivet, less muscled body strung together with elastic. The Monsters are most commonly found on this body. This line features unique glow in the dark hands. Three of the four characters have the same thin fingered clawed hands, the only difference is the Wolfman who has hair sculpted into his hands. This body has not been factory reproduced.
Mego Mad Monsters are available on the type 2 bodies, but they are less common. This second version of the male body was more buff and had plastic joints instead of metal rivets, and strung together with hooks and rubber. Like the type 1 this line features unique glow in the dark hands. Three of the four characters have the same thin fingered clawed hands, the only difference is the Wolfman who has hair sculpted into his hands. Mego also released the Monsters under the Lion Rock banner. The Lion Rock type 2 has the glow hands, but all four monsters have the same hands and they are made from the same molds as the standard Mego type 2 instead of with the monster hands used on the Mego release. The type 2 body with monster hands has been reproduced by Classic TV Toys. CTVT's bodies (marked Figures, Inc. on the back) tend to run a touch shorter, are more fragile, and have a slightly different design. A telltale sign of the CTVT body are the legs that tend to snap together at the knees. Doc Mego doesn't make the monster hand body but he does make the standard type 2. DM's (marked 7th Street Toys on the back) is very accurate in detail and appearance but with a heavier feel and more rubbery hands.