Full Name Riff
First Appearance (Barney and the Rocko Squad) Enter the Rocko Squad
Barney and the Rocko Squad Portrayer Michaela Dietz (standard)
Darren Daniels (classic clips)
"Oh, what if it's a REAL plane?! It'd be full of PEOPLE and SUITCASES..."
— Riff while imitating Jin's voice in the third clip of Barney's Best Moments.
— Evil-Man, after Riff appears.

Riff, or Orange Dinosaur, is a six-year-old orange Hadrosaur who is B.J. and Baby Bop's cousin. One of his big interests is music and he is known for being able to imitate sounds really well. When he is excited, his stripes on his crest light up and blink quickly; however, he says "BOWSER!" instead of "WOWZER!". If Alisa Bosconovitch and/or Ling Xiaoyu were to scream "BARNEY!" in an episode, Evil-Man would do the same thing when Barney came if Riff appears in an episode, except he would say "Orange Dinosaur Detected".

Michaela Dietz voices Riff during the events of Barney and the Rocko Squad, but classic Barney & Friends clips have him voiced by Darren Daniels, who also voices Jin Kazama in the same series.