The Prince of Phumph

From Muppet Wiki

The Prince of Phumph (Malcontento) appeared in the 1975 Julie Andrews TV special Julie Andrews: One to One.

In the special, Kermit tells the story of the sun-deprived Kingdom of Phumph, which consists only of a king, a queen, a prince, and one subject, a young multi-tasker named Marvin who becomes king by adopting a doorstep child, thus making the sun shine in the kingdom.

He was the same puppet as Hudson, except with different eyes and moustache.