Joseph Meach was a high diver who had fallen on hard times. In an attempt to draw publicity to himself, Meach set up a water tank on a sidewalk in Metropolis and dove off a building. Unbeknownst to Meach, the plastic tank he used was leaking, leaving only an inch of water; Meach would have died if not for the intervention of Superman. The Man of Steel, upon learning of Meach's misfortunes, obtained a job for him at the Superman Museum, where Meach was employed as a custodian. Meach's bitterness did not subside, and being surrounded by artifacts and mementos of Superman's career directed his anger towards Superman.
One night, as Meach was sweeping in front of a series of statuettes depicting the Legion of Super-Heroes, a bolt of lightning passed through an open window and struck the display. The statuettes, which were actually miniature lifeless duplicates of the Legionnaires, unleashed an energy blast that struck Meach. Meach discovered that he was endowed with the combined powers of the Legion members. Determined to defeat Superman and Batman, Meach used his shapeshifting power to turn his skin green and form a costume that was half Superman's, half Batman's, along with a lead-lined Bat-mask to prevent Superman from using his x-ray vision to discover his true identity. Calling himself the Composite Superman, Meach told the heroes that if he was not allowed to join their team, he would expose their secret identities.
Powers and Stats
Name: Joseph Meach, Composite Superman
Origin: DC Comics
Classification: Mutated human
Powers and Abilities: Superhuman Physical Characteristics, Flight, Electricity Manipulation, Telepathy, Invisibility, Duplication, Fire Manipulation, Transmutation (Can change one element into another as well as turning the opponent into anti-matter), Can make the opponent's body become extremelly heavy, Elasticity, Size Manipulation (Can become small enough to fit into a keyhole or turn into a giant), Shapeshifting (Can disguise himself, as well as changing the shape of his body), X-Ray Vision, Magnetism Manipulaton, Intangibility
Speed: Massively FTL+ (Fought Superman)
Lifting Strength: At least Class Y (Three times stronger than Superman)
Striking Strength: Universal
Durability: Universe level (Superior to Superman)
Standard Equipment: None notable
Intelligence: Supergenius (As smart as Brainiac 5)
Weaknesses: His powers have a time limit of some hours, but he can use the Legion of Super-Hero figures in the Superman museum to recharge his abilities;