- "No class."
- ―Russell's catchphrase
Russell Cosby is Bill's younger brother, and the youngest member of the Junkyard Gang. In the Junkyard Band, he plays the xylophone (made from empty cans and a coat rack). Like Bill, Russell is an animated version of Bill Cosby's real-life brother, Russell Cosby.
Russell can be very bratty at times. He's known for his snide remarks and blunt observations. Russell's also known for not being on good terms with Rudy, and frequently insults and criticizes him, much to Rudy's annoyance.
Russell is a very short African-american young boy with freckles.
He wears a dark blue ushanka winter hat, a yellow scarf, a blue coat, dark blue pants and red boots.
In the film, his appearance was mostly unchanged, other than his hat having white fur added to it.
- Russell is the only member of the Junkyard Gang who didn't appear in the real world, in the film.
- In the movie, Russell is voiced by Jeremy Suarez, who also voices Koda from Brother Bear.