The following is a list of characters featured in the Nicktoon Rocko's Modern Life.
Main characters[]
| Image | Name | Voice actor | Description |
|---|---|---|---|
 |
Rocko Rama | Carlos Alazraqui | The wallaby who emigrated to the United States from Australia. |
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Spunky | Carlos Alazraqui | Rocko's pet dog who closely resembles a Bull Terrier. |
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Heffer Wolfe | Tom Kenny | The happy-go-lucky and not-too-bright steer who is Rocko's best friend. |
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Filburt Turtle | Doug Lawrence | The neurotic and hypochondriac turtle who is Rocko's other best friend. |
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Ed Bighead | Charlie Adler | The grumpy old toad who is Rocko's next-door neighbor. |
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Bev Bighead | Charlie Adler | The more level-headed toad who is Ed's wife. |
Minor/recurring characters[]
| Image | Name | Voice actor | Description |
|---|---|---|---|
 |
Chuck and Leon | Tom Kenny (Chuck) Carlos Alazraqui (Leon) |
The pair of chameleons who have faux Scandinavian accents and snooty attitudes. |
  |
Ralph/Rachel Bighead | Joe Murray | Ed and Bev's transgender daughter, who was known as Ralph in the original series. |
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Mr. Dupette | Charlie Adler | The lizard who is the CEO of Conglom-O. |
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Earl | Carlos Alazraqui | The large, mean-looking bulldog. |
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Really Really Big Man | Tom Kenny | The big and really strong insectoid superhero. |
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Mr. Smitty | Tom Kenny | Rocko's boss at Kind of a Lot o' Comics. |
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Paula Hutchison | Linda Wallen | The dentist, cashier, surgeon, veterinarian, obstetrician, and pharmacist who is also Filburt's wife. |
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Grandpa Wolfe | Charlie Adler | The elderly wolf is Heffer's adoptive grandfather. |
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Grandma Wolfe | Charlie Adler | The elderly wolf is Grandpa Wolfe's wife and Heffer's adoptive grandmother. |