The Extremes are a singing group of unnamed alien-like creatures who appeared on the first two episodes of The Jim Henson Hour, performing "Neutron Dance" in episode 101 and "Maneater" in episode 102.
The four Extremes are:
- Purple Extreme: Sharon Lee Williams
- Yellow Extreme: Steve Whitmire
- Blue Extreme: Kevin Clash
- Orange Extreme: Jerry Nelson
Various members of the Extremes also popped up occasionally on Muppets Tonight.
- "Alien Opera"