Through the years, Henry (Hank) Pym began to fall into periods of tension and depression, feeling that his scientific research had gone nowhere since his discovery of the Pym Particles, as well as being overwhelmed with guilt over his creation of Ultron, and an increasing sense of inadequacy compared to his wife, who besides being the principal means of support in the marriage due to her inheritance from her dead father, had achieved considerable success in her own career as a fashion designer, as well as eclipsing Pym's career as a superhero, what with her consistent service in the Avengers while Pym had numerous periods of retirement and inactivity. In the midst of another breakdown, Pym began to be verbally abusive towards the Wasp while attempting to redeem himself through renewed service in the Avengers as Yellowjacket. Things came to a head on an Avengers mission, when Yellowjacket blasted an enemy, whom Captain America was attempting to negotiate with, in the back. Feeling Pym's actions endangered the team and the public, Avengers chairman Captain America brought court-martial charges against him. From here, Hank would make two of the worse decisions of his life. The first one, Hank was hoping to make himself look good at the court-martial hearing, the increasingly unstable Pym created a giant robot programmed to attack the Avengers, which only he would know how to defeat. The second was, when Janet discovered his plan, the now-deranged and misguided Pym, at his lowest point, strikes her across the face. Not only was Yellowjacket's plan painfully transparent at the court-martial hearing, it also backfires, as his robot is about to kill him before Janet stops it. You'd think Pym would have learned his lesson about robots by now? Expelled from the Avengers, divorced from Janet and penniless, Pym is manipulated by his old enemy Egghead into stealing the unbreakable metal adamantium from a government facility by using his niece Trish Star's life as a gambling chip. In the course of the robbery the Mighty Avengers shows-up. Pym desperate to save Trish Star nearly defeats the Avengers (including Thor, Iron Man and Captain America), before a confrontation with his ex-wife proves his undoing. Pym is unable to prove that Egghead forced him into the robbery, and is sent to prison on charges of treason (at one point seeing his ex-wife in the tabloids being romanced by teammate and lady killer Tony Stark, a.k.a. Iron Man). When it comes time for Pym's trial, he is kidnapped (although it looks like a prearranged escape) by the Masters of Evil at the command of Egghead, who wants Pym to create a machine to grant him eternal life. Seeing no other options Pym agrees, and soon shows Egghead the finished device, inviting the criminal to try it out. The suspicious Egghead makes Pym use the machine first, just as Pym had anticipated. Pym had loaded the machine with weapons and methods to defeat the Masters of Evil, whom he summarily kicks all their butts. Pym decks Egghead, and turns to leave, to turn himself in to the authorities, when Egghead pulls out a gun. The just-arriving Hawkeye the Marksman fires an arrow into the gun, which backfires, saving Pym but killing Egghead. Henry Pym is cleared of all charges thanks to the evidence in Egghead's lair, but refuses to return to the Avengers, stating that his superhero career had got him into this mess, and cost him his marriage, and he would never return to it. Although through the years the two has had an on again and off again relationship, they both have never recovered from this event. Of coarse we all know that Hank couldn't re-frame that long from being a hero. Months later after The Fall, Pym would work as tech support for the West Coast Avengers and eventually joining their ranks.