Derf is a minor character in Fred: The Movie, and Fred 2 : Night of The Living Fred. He is usually found near bus stops and gives wisdom to Fred as he has breakdowns about Judy's home. He is seen wearing a leather jacket and black pants. He is a foil for Fred, as Fred is hyperactive with a high pitched voice, while Derf is calm and is monotone. This is also referenced in that his name is Fred backwards. He has a quick cameo in "Fred 2: Night of the Living Fred".
|Height:||5'11.5" (1.82 m)|
Derf first appears in Fred: The Movie on a public bus, which he refers to as "the number six bus." It is unknown whether Derf is a real person or a hallucination, as his actions only directly affect Fred. Further ambiguity to his true nature is seen in that he looks like Fred.