Uncle J. P. Grosse, Scotter’s uncle and owner of the Muppets’ theater.
Viviacious Miss Piggy
Waldorf, of Statler and Waldorf
X is for the letter X, from Sesame Street
Yoda was a Muppet, then The Force turned him CGI.
Zoot - sax is his axe.
Anyone for another round?
Bon-bons are round.
Cornbread are square.
Donuts are torus-shaped.
Eggs are ovoid.
Flat has zero curvature.
Grapes are round, too.
Hamburgers are oblate spheroids. 
Ice cream cones are… conical. What a surprise.
Jujubes are truncated cones. And Elaine’s favourite snack on Sienfeld
Kick the Can needs a tin cylinder.
Liquids are amorphous.
Mooring lines are catenary.
Nonagons are nine-sided.