New character.
-Pony: doesn't talk, really, just neighs
-Muppaphone: Louise
-the wrinkly pig: Dave
-the Centurion in Vet's Hospital: Steve
Nope.
I'd say Crazy Harry is in there, somewhere, and Marvin Suggs, plus a circus clown, Fozzie, the male Koozebanian, a girl with two heads, a Whatnot...