In THE EMPIRE STRIKES BACK, Luke and R2 seek out the Jedi Master, Yoda. They find him on the swamp planet of Dagobah. R2 quickly learns that swamps are not too friendly to droids.

• R2-D2
  

I just took some brown paint and painted the figure...but not too neatly, as I wanted a "muck-encrusted" look to it.