But, for a couple of issues, Jimmy's monstrous transformations became a menace to him.
Let's see how these events happened...which both happened under covers by Curt Swan and George Klein.
The World Of Doomed Olsens!
Legion of Super-Heroes (Mon-El as the Collector, and Proty II, Colossal Boy, Cosmic Boy, Bouncing Boy and Chameleon Boy as the Jimmys). The Legion did this to see if Jimmy could spot the hoax. When he did, they were to make him an honorary Legionnaire.
The World Of 1,000 Olsens!
Wolf Man, Giant Turtle Man, Human Porcupine and Octopus, Fat Jimmy Olsen and more (though they forgot Jimmy as Superman or as a gorilla), and come back later, at some point, to see coverage of Jimmy as Elastic Lad, Flamebird and Agent Double 5!