The part in Tanetane Island, with Duster, Wess and that DARN Claus, makes me wish that area had more than one line of dialogue related to Duster and Kumatora. =/
I've noticed just now, but the rotten hamburger Kumatora's holding (New Pork City) might be a reference to the fact that in EarthBound you eat the hamburgers you find in trash cans.