The premise of the 2001 Henson script is similar to the graphic novel Superman: Last Son of Earth by Steve Gerber published by DC Comics in 2000.

Only Human was a screenplay in development by the Jim Henson Company and Columbia TriStar in 2001. Written by Ken Kaufman, the concept was an inversion of the Superman mythos. A human family, convinced that the Earth is doomed, send their baby into space for safety. The child lands on a planet where everyone else possesses superpowers.

The logline as listed in Baseline Studio Systems:

As the world nears destruction, an earthling baby is sent to live on Superman's home planet, Krypton.

David H. Steinberg was later brought in for rewrites, but the project has yet to see the light of day.