Georgie
From Muppet Wiki
Georgie is a hippopotamus and children's TV icon who appeared in the Dinosaurs episode "Georgie Must Die." An obvious spoof of Barney the Dinosaur, Georgie is actually a megalomaniac planning to take over the world through his financial empire and the devotion of the dinosaur children.
A similar character, Blarney, appeared on the series as a hand puppet.

