Bubble and Liquid
Two hideous puppets from the Peppermint Park Footage. They came from a segment endorsing the endless joys of bubble liquid. Their names were never mentioned, so let's just call them Bubble and Liquid.
Bubble would be the puppet that blows the bubbles. He/it wears a brown tartan collared shirt and bears a strong resemblance to Earnie. Liquid is the other puppet in the red shirt, red neck-bandanna.
The entire footage consists of the Bubble and Liquid talking about "Bubble Liquid" while Bubble blows bubbles. The entire thing is taped with a solid sky-blue backdrop which perhaps made it easier to do this.