Ralph & Foof are takin' a ride on the famous Duncan Roo! Of the 4 pictured, whose having the most fun? Duncan? No. Ralph? No. Foof? No. The Tamagotchi? Heck yeah! They're all about fun... or so I hear.
Oh crap... I forgot that there's 3 shrooms too. Can't rule them out.
Duncan looks like a taun taun.