John Smallberries is the professional alias of the late American voice actor Robert DeWayne Papenbrook, who used this pseudonym for a significant portion of his extensive anime dubbing work. His career in voice acting, which spanned from the late 1970s until 2006, was marked by a prolific output, particularly in the English-language adaptations of Japanese anime series and films.

A native of San Diego, California, Papenbrook's entry into voice acting came through an unusual discovery by filmmakers Steven Spielberg and George Lucas, who cast him to provide the voices of the Hovito natives for the film Raiders of the Lost Ark. This initial foray led to a long-standing career where he became a familiar presence in the industry, often cast in roles that required "gruff" or authoritative vocal qualities. His work under the Smallberries name is deeply embedded in the anime dubbing landscape of the 1990s and early 2000s.

The specific roles mentioned are all confirmed entries in his filmography under the John Smallberries alias. In the anime adaptation of the video game Viewtiful Joe, he provided the voice for the seasoned superhero Captain Blue. This role was particularly notable as it was his final piece of work; he voiced the character for the first twenty-one episodes of the English dub before his death, with the role subsequently being taken over by Paul St. Peter. In the 1998 OVA Mezzo Forte, he is credited with voicing the character Momokichi Momoi. His extensive genre coverage also included the science fiction series Fafner, where he voiced Kyouhei Mizoguchi, and the fantasy series The Princess of the Desert Kingdom, where he took on the role of Lion.

Beyond these specific credits, Papenbrook's career as John Smallberries was characterized by a high volume of work and frequent collaborations with other voice actors and directors in the Los Angeles-based dubbing industry. He was a staple in dubs produced by companies such as Bang Zoom! Entertainment and Studiopolis. His voice can be heard in a wide array of major anime titles, including roles in.hack//Sign as Lios, Great Teacher Onizuka as Hiroshi Uchiyamada, Rurouni Kenshin as Kojishiro Kamiya, and Transformers: Robots in Disguise as Mega Octane. He also had recurring roles across the various Tenchi Muyo! series, voicing both Katsuhito Masaki and Nobuyuki Masaki.

His legacy is also carried on through his son, Bryce Papenbrook, who followed in his footsteps to become a prominent voice actor in his own right. The younger Papenbrook has occasionally used the stage name "Rich Smallberries," a continuation of the family's unique professional moniker. Bob Papenbrook passed away on March 17, 2006, due to chronic lung complications, leaving behind a substantial body of work that has solidified his place as a foundational figure in the history of English anime dubbing.