Incredible Hulk#139(1971)

The Leader is once more formulating a plan to destroy the Hulk once and for all, and considers the idea of putting the Hulk through so much strain to cause him to have a heart attack. To serve this end, the Leader approaches Glenn Talbot and offers him an attempt to both cure Betty (who has been transformed into a glass statue after a blood transfusion from the Sandman) and to destroy the Hulk once and for all. Talbot, hating both the Hulk and Banner as he sees them both as an obstacle for winning Betty's love, agrees to talk General Ross into letting the Leader aid them. As the Hulk finds some peace and quiet in the woods, Talbot tells Ross of the Leader's plan. Ross finds the idea crazy, but decides to try and get permission from the President. Calling President Nixon on a secure line, General Ross gets the Presidential okay from Nixon to carry on with the Leader's plot to use a new experimental brainwave projector device. Setting up extra security around the hospital, and setting the Leader up with the device, the gamma-spawned mastermind begins his attack. The Leader uses the Mentallo-Projector to create artificial constructs of the Hulk's foes and sends them out to attack the Green Giant. The Hulk is forced to fight mental projections of the Rhino, Xeron the Starslayer, the Sub-Mariner, and the Missing Link. As this continues, it becomes clear that the Leader is intending to kill the Hulk and when Ross tries to stop him, the Leader uses his mental powers to freeze both Ross and Talbot in place before continuing his assault on the Hulk. The Hulk continues to battle more artificial foes like the Night-Crawler, the Mandarin, the Sandman, the Glob and Iron Man, as the Leader hopes to draw the Hulk closer to the hospital, hoping that not only will he destroy his foe, but also the vibrations from the battle will cause the fragile glass form of Betty to shatter. As the Hulk tangles with a duplicate of the Absorbing Man, Jim Wilson realizes what the Leader is up to and breaks into the hospital. There, Jim uses the Leader's own device to create an army of Hulk duplicates. Faced with impossible odds and not knowing how this is possible, the overtaxed Leader ends up falling into a catatonic state, ending his threat, and he is taken into military custody. The Hulk, meanwhile, is fighting a recreation of the Abomination who suddenly disappears, and the Hulk, having no one left to fight, promptly leaps away from the hospital, ending the potential threat toward Betty's fragile glass form.