Filburt Shellbach is a main and supporting character of the cartoon
Rocko's Modern Life and the comic book series of the same name. In the Australian website of the television show, his name is sometimes spelled as
Filbert and sometimes as
Filburt. In the comic book, his name is spelled
Filbert. On the show's creator
Joe Murray's website and in the episodes "Born to Spawn" and "Uniform Behavior", his name is spelled as
Filburt. In the episodes "Born to Spawn" and "Fortune Cookie", he is referred to as
Mr. Filburt Turtle. However, in the episode "High Five of Doom" Rocko and Heffer read in Filburt's diary that his full name is
Filburt Shellbach.
Doug Lawrence provided Filburt's voice.