Regrouping, he broke into the physics building, to steal some of the super-conductive ceramics. The noise of his assault drew Spider-Man, who again turned Humbug's power back on him, this time blasting him out through a window. Spider-Man's web saved Mitty from going splat, but Humbug then distracted him by blowing up some cop cars. Spider-Man tracked Humbug to his old entomology lab, where he took a woman hostage. Spider-Man turned the tables on him, by grabbing a jar containing some of his specimens: "Let the girl go, Humbug! Or these roaches die screaming!" Humbug surrendered, appalled at Spider-Man's cruelty, and was sent back to jail.
Later, Humbug attended the Springdale branch of the Bar with no Name, where he bragged about the newly redesigned Tomazooma. In his very own one-shot special called "Spider-Man: Bug Stops Here", Humbug attacked the New York Museum of Natural History to finance his research. Spider-Man, being present at the time of the robbery, confronted his old nemesis. Spider-Man eventually led Humbug to a place of the museum that was damaged by termites, and Humbug fell through the floor broken by those termites. During the fall, Humbug was knocked out upon landing on the lower level floor.
Discovering that Humbug had renewed his attack on the museum, the mercenary known as Deadpool was hired by unknown parties to prevent it. Deadpool eventually caught up with Humbug, but one of Humbug's insect buddies warned him of the attack. Humbug fired sonic blasts at Deadpool, causing the mercenary to go both deaf and mute. Furious, Deadpool chased Humbug into a woman's dorm. Deadpool then tried to determine Humbug's secret identity, and nearly killed two innocent men, before figuring out that entomology was the study of insects, and thus making the connection between Mitty and Humbug. He then attacked Humbug in his lab, doused him with honey, and then hurled a jar of South American fire ants on him. Humbug tried in vain to blast off the fire ants as they devoured him, and after a few minutes, Deadpool declared Humbug to be dead.
However, while the outer layer of Humbug's skin was eaten by the ants, he made a deal with them. They let him live and he got them younger and tastier victims. Rodney, the leader of the ants, stayed with Humbug after this.
In Heroes for Hire v2 #9 he is apparently eaten by giant insects while on a mission in Antarctica. In #10, he is alive and well along with new powers. He is advised by the insects that they must return to New York for the Hulk and his Warbound are fast approaching. In the World War Hulk series, Humbug turned on Earth's hive and the Heroes For Hire to serve the Brood queen of Hulk's Warbound, No-Name. No-Name uses him as a host for her gestating eggs.
It was later revealed that Earth's hive knew that Humbug would turn on them and in fact used him as a Trojan Horse to transport their own agents into the queen's hive. These agents then shot the queen with a beam, claiming afterwards to have sterilized her. When the queen gloated that her hivelings were near hatching inside of Humbug, the Earth-hive agents revealed that Humbug had been poisoned beforehand, dooming both him and the queen's eggs.
Following Heroes for Hire #9, Humbug received a massive increase in his powers, as well as an exo-suit. He has demonstrated superhuman strength, speed, agility, senses, and the ability to communicate with any insectoid in the world and possibly beyond Earth.
When the Black Cat destroyed his helmet, it was revealed that his skin had taken on an insect-like appearance.
However, it was revealed that the suit itself was infested with insects from Earth's hive when the Helmet sprouted legs. The bug helmet also displayed its ability to fire a laser beam, suggesting that most of Humbug's new abilities were from the exo-suit or the bugs within it.