Lucas Cruikshank also portrays Derf, a mysterious stranger resembling Fred, yet possessing traits completely opposite to Fred's. The name "Derf" is "Fred" backwards. ==[[File:Derf.jpg|thumb|About the chararcter
Age:[Maybe 34,because of the moustue]
Height:Same as fred
Weight:Same as fred
Derf has big brown hair with a moustue,and other things.
Derf is Fred spelled backwards