Created by writer Peter David and artist George Pérez, the character first appeared in The Incredible Hulk: Future Imperfect #1 (Dec. 1992).
[1] Travelling to America, he became disheartened with the state of the country, including the destruction of the Hoover Dam and Mount Rushmore, until he found people still alive under Washington.
Hulk however wanted to make amends, and vanished for a number of years before returning with U-Foes member Vapor, who fatally poisons Hercules.
[5] Maestro developed a new movement he called Post-Apocalyptic Existence, or PAX, which would destroy the remaining division in humanity and replace it with a single overlord: himself.
An elderly Rick Jones encounters the reality-hopping mutant Proteus, who has possessed the body of an alternate reality Hulk from the year 2099.
Genis-Vell and Spider-Man 2099 eventually return to their own time, with no consequence for the Maestro, when the elderly Rick uses his ability to wield Thor's hammer Mjolnir to defeat Thanatos.
[9] Hulk learns that the "homing sense" that has always allowed him to locate ground zero, his "birth" place, is actually attracted to the Maestro's spirit and remains.
[15] The Maestro then travels back to present day by having the demon possessing Strange manipulate Miguel into repairing Doctor Doom's Time Platform.
With help from Cambria Banner, Logan and Hawkeye of Earth-616 were able to defeat Maestro and the surviving members of the Hulk Gang went their separate ways.
[18] Later on, it is revealed Maestro recovered from his wounds and went on to conquer a small town in Northern Canada called Fort Wells, ruling as "the King" and executing anyone who defies him.
Logan eventually tracks him down, and after injecting himself with the dangerous regenerative drug Regenix, cuts Maestro's head off, ending his reign of terror.
[19] After Doctor Doom incorporates the "Future Imperfect" timeline into his new Battleworld in "Secret Wars", the Maestro resurfaces as the ruler of one of the planet's domains called Dystopia.
[20] After a brutal fight, the Maestro offers to release Dystopia from his tyrannical rule if Ross can help him kill God Emperor Doom.
Although he tracks it to a region of Asgardia where it is guarded by Ulik, he is shocked to learn that its final line of defense is the 'Ancient One'... an elderly Rick Jones.
Believing himself to be victorious, Maestro reverts to his human form, with Rick stating that he'll now remain trapped in the illusion until he dies.
[27] After assuming control of the Power Primordial contained within the Iso-Sphere that the Grandmaster and Collector were competing for, Maestro recreates Battleworld.
[29] The Maestro largely shares the same powers as the Hulk, but a greater degree due to the century's worth of radiation he has absorbed resulting from the nuclear wars that decimated his Earth.