B.R.A.T.S. of the Lost Nebula

From Muppet Wiki

B.R.A.T.S. of the Lost Nebula was a science fiction Saturday morning series created by Dan Clark featuring Creature Shop puppets and CG effects. The series premiered on the WB Network on October 10, 1998. Although thirteen episodes were produced, WB canceled the show after the third episode.

The remaining episodes premiered on Canada's YTV channel, with the last airing on January 20, 1999.