Incredible Hulk #156

« Holocaust at the Heart of the Atom! »: The Hulk arrives on Jarella’s world with the mental acuity of Bruce Banner. He finds the city of K’ai in ruins and discovers that Jarella has been captured by the treacherous Lord Visis. He rescues her and leads her people in revolt, until Visis teams up with the master assassin Krylar, whose weapon makes its target battle his own darkest fears. Turned on the Hulk, it sets the thinking Hulk against his old brutish self. Jarella’s magicians counter by ending the spell that makes him smart, Pym’s serum wears off, and the Hulk grows back to normal size. Key issue: First appearance and death of Krylar.