“Superboy” ran in syndication from ‘88 to ‘92, but despite strong ratings, Warner Brothers canceled the show to focus solely on “Lois & Clark,” which was headed for primetime.
Fox constantly nitpicked Joss Whedon’s show “Firefly” and almost refused to air it in an attempt to force Whedon to pair the character Zoe with Malcolm instead of Wash.
“Alex Mack” ran from 1994 to 1998 and centered around the titular high schooler who had superpowers due to chemical exposure. Alex was played by the talented Larisa Oleynik.
After four years on the air, Oleynik got tired of the stardom and wanted to quit the show and finish high school. Nickelodeon then canceled the show rather than replace Oleynik.
“Clone High” centered on teenage clones of historical figures, and though most of these figures were treated disrespectfully, it was Gandhi’s clone that got the show canceled.
Gandhi’s (dubbed G-Man) clone depiction as a glib, flirtatious, snack food enthusiast led to a hunger strike at MTV India’s offices, forcing the show’s cancellation.