Helium miners

The helium miners are people who work at the solar helium mine. In 3013, fifteen of them were trapped in the mine, after a collapse caused by Zapp Brannigan, but they found safe haven in the mine's doom chamber. Fry, Leela, and Bender were sent there, and kept laughing at their voices, which, due to the helium, were very high-pitched. Bender managed to rescue all the miners, and Mayor Poopenmeyer later awarded a medal to him.

Production
The helium miners first appeared in a preview clip for 7ACV18, nine days before the episode aired.