From Muppet Wiki

The Muppets at Walt Disney World: Beaker (in the background), Clifford (in the background), Dog (in the background), Dr. Bunsen Honeydew (in the background), Fozzie Bear (in the background), Frog (in the background), Momma Bear (in the background), Rowlf (in the background)

Don't Forget to Watch the Movie: Two-Headed Monster (in the background), Zoe (in the background)