The Men who aided Jimmy Olsen aka Mister Action

Jimmy Olsen, both Jimmys actually, were young hotshot reporters for their respective Metropolis' biggest newspapers. As on Earth-One with the Daily Planet, so on Earth-Two at the Daily Star... many of these paper's most celebrated stories were penned by these two red-headed youths. And while they owed their success in part to the Supermen, they also were aided in their quest for the truth... and in fact their very survival, to the Professor Phineas Potter of their twin world's. While these two men had divergent paths, they ended up mirroring one another in life.

The Earth-One Professor Potter was a well-intentioned yet absent minded uncle of Lana Lang, provided many misguided adventures for his friends and family due to his bizarre inventions. Among the most successful creations of Potter's was the serum that allowed Jimmy to transform himself into the stretching superhero: Elastic-Lad. He also developed a variation of the duplication machine, which had originally been created by another scientist that spawned Bizarro clones of Superman and other individuals. 

The Earth-Two Professor Potter was originally an aspiring cartoonist who developed a bio-ray that could duplicate fictional characters and turn them into 3-dimensional characters, including Superman's alter ego of Flying Tiger. After a couple forays into felony as Funny Face, Potter retired from his criminal career and turned his desire to bring things to life into a career as a physician. Years later, he modified his bio-ray to enable him to duplicate organs, which he used to clone an organ of the younger Jimmy Olsen of Earth-One to save his world's Olsen. Interestingly, it was while that Jimmy still had the Elastic-Lad serum in his veins, and so this now was a part of Earth-Two Jimmy's physiology, although there was no record of the older Olsen becoming an "Elastic-Man".