Believing that the Justice Society of America was merely a cover for a criminal organization, he attempted several criminal acts which were thwarted one by one by members of the Society. Realizing his mistaken misconception, he jumped into a vat of acid (All Star Comics #34).
The vat was an illusion he had created, and he next set out to organize the world's first supervillain organization, The Injustice Society of the World.
The Wizard proceeded to escape prison once more and reformed his gang with new members Icicle, the Fiddler, the Sportsmaster, the Huntress, and the Harlequin. The Harlequin, as it turned out, was actually not a criminal at heart...she merely kept up the pretense in order to attract the attention of Green Lantern. Along with aspiring Justice Society member Black Canary, she soon freed the heroes which then captured their foes (All Star Comics #41).
In the 1950s, the Wizard was contacted by Colonel Future to help get revenge on Superman by removing him from existence. Unfortunately, the Wizard accidentally eliminated only his memory. When Clark Kent married Lois Lane, Lois persuaded the Wizard to restore his memory (which was a success) and Superman battled The Wizard. Superman's memory was restored and the Wizard was sent to jail. (Action Comics #484 - Pre-Crisis)
Soon, he and the Injustice Society members went to Earth-1 to recruit younger villains to fight the Justice Society. The Wizard went there with the Fiddler with the unexpected side effect of reduced power. There, he was recruited into Darkseid's Secret Society of Super Villains which he later took over with other villains who revolted. The Wizard was later apprehended and sent to jail where, due to this reduction in his powers, the Wizard sought out and was able to trick the Secret Society into obtaining three magical relics which he wanted to help him increase his powers. They were The Cloak of Invisibility; The Power Glove and a jewel medallion, which were worn by the Wizard and incorporated into his new costume. The Wizard led the Secret Society back to Earth-Two in a plot to capture the JSA, which was a success when they captured the Atom, Doctor Mid-Nite, and Mr. Terrific. The JSA were alerted and defeated them. (Secret Society of Super-Villains #7-15 - Pre-Crisis)
The Wizard was responsible for a coup in which his Secret Society, consisting of himself, Reverse Flash, Floronic Man, Blockbuster, and Star Sapphire, switched bodies with members of the JLA. This happened in Justice League of America #166–168 (1979), a storyline that was revisited in Identity Crisis (2004), where it was revealed that Zatanna wiped the heroes' secret identities from the villains' minds following their defeat.
The Wizard later returned to Earth-2 once again reassembling the Crime Champions with the help of Johnny Thunder of Earth-1, but was once more defeated by the combined might of the J.S.A. and J.L.A (Justice League of America #219-220). He later appeared briefly during the J.S.A.'s trial before congress for allegations of misconduct during World War II, but was quickly defeated by Doctor Fate (America versus the Justice Society #2).
Sometime later, he moved to Canada and joined with the Fiddler and the Shade as well as new villains Icicle II, Artemis Crock (later called Tigress), Harlequin III and Hazard, to form the group Injustice Unlimited, the second incarnation of the Injustice Society, where they fought Infinity, Inc. and the Global Guardians. The Wizard was presumably killed by the second generation Hourman, Zard still had the trick of faking his death. (Infinity Inc. #34-36)
Of course, this too was an illusion, and he had transported himself to the land of Faeries where he could recoup his power base. Once more, he was defeated by an assemblage of heroes and by his own ego (Infinity Inc. #50).
The Wizard appeared in the JSA All-Stars miniseries in which he disguised himself as the villain Legacy and captured the elder members of the Justice Society. He is then "killed" by the Spectre.
Shortly after Identity Crisis, Despero gave the surviving Secret Society members their memories back. In the JLA story, "Crisis of Conscience," the Wizard appeared as part of a reformed Secret Society of Super Villains looking to avenge themselves against the forced erasure of their memories. Aided by Felix Faust, they attacked the Daily Planet, and were stopped once again by the Justice League. After defeating Despero at Wayne Manor, the League was disbanded and Zatanna re-wiped the memories of all six Society members.
He has since appeared in JSA: Classified as part of a new Injustice Society that includes Icicle, Tigress, Solomon Grundy, Gentleman Ghost, Ragdoll, and Johnny Sorrow and gained possession of the key to the Ghost Zone.