Main characters

Norbert Foster Beaver
Norb is Dag's laid back older twin brother (by four minutes). He uptakes many hobbies and frequently (and intentionally) mispronounces words for humorous effect. He comes off as the smarter of the two and is more down-to-earth and sarcastic than his brother. His trademark phrase is "Biiiiig hug!" (often accompanied by him hugging Dag). He has yellowish-tan fur and a purple nose. Voiced by Nick Bakay.
Daggett Doofus Beaver
Dag is the younger twin brother of Norbert (by four minutes). He is very crazy, extremely hyper, and always hilarious. He says an assortment of strange phrases and likes calling people names. His trademark phrase is "That was nuts!" and is also known for adding 'eh' at the end of sentences (which Invader Zim did as well in the episode Door to Door, in homage to Daggett). He is generally considered the less intelligent of the two. He has dark brown fur and a red nose. Voiced by Richard Steven Horvitz.
"Mum" and "Dad"
Dag and Norb parents. Their names never hardly ever were mentioned, while in the series of "If you in-sisters" we can hear that the name of father is Leonard. Futher more, color of miss Beaver is such a color as Dag, but on education it anymore looks like Norbert. About Mr. Beaver we can say also same, only on a turn.
Stacy and Chelsea
The twin younger sisters of Norbert and Daggett, their birth led to their eviction from their family's home. They were first identified in the episode "If You In-Sisters", though before their official introduction they are shortly shown in "Born to Be Beavers" as newborns without their names or even their genders identified. Chelsea bears a resemblance to and acts much like Daggett in her hyperactivity and speech patterns, while Stacy apparently takes after Norbert in appearance and personality. They are much more familiar and united than their brothers. They both adore their older brothers and hate it when they fight. They are named after and voiced by creator Mitch Schauer's daughters.

Secondary characters

Barry Bear ("Ohh, Baby!")
Daggett and Norbert's disco loving friend; obviously based on Barry White. He is a famous singer, whom Norb and Dag try to exploit. Whenever he sees a clown he flashbacks to his days as a circus bear and cowers, saying: "Oh, the baaaaad times!". He is voiced by actor John Garry, who provided the narration for the pilot episode of Invader Zim and also provided the voice of the host of "Mysterious Mysteries", a show-within-a-show seen on Invader Zim.
Stump is a tree stump that Norb met. He introduced Stump to the other creatures of the forest in the episode, Guess Who's Stumping to Dinner. Stump often moves on his own while he is off-screen; in "Brothers...To The End?" episode he is seen drinking punch with the others, which was the first time he actually moved on screen.
Treeflower ("The Flirt")
Treeflower is the love of Norbert's life, whom he met at a concert (a parody of Woodstock) in "Bummer of Love" episode. Once a hippie beaver, she successfully works in versatile jobs, e.g. as elevator-music composer ("Tree of Hearts") and firefighter ("A Little Dad'll Do You").
Bing ("Mr. ANNOY!")
Bing is an annoying lizard who hangs around Norb and Dag, introduced in episode "The Bing That Wouldn't Leave". Bing talks extremely fast and often employs circular logic. Victor Wilson provided Bing's hyperactive voice. It is not confirmed what kind of lizard Bing is; however, he is seen changing colors like a chameleon and losing his tail like a gecko.
Oxnard Montalvo
Norb and Dag's favorite B-movie actor. Norb and Dag often watch black and white horror movies (these are very seriously drawn, contrary to the regular style of the show). An obvious homage to 1950's horror movies. The name seems to be a parody of Ricardo Montalban, if not the character's look. His name is homage to the California towns of Oxnard and Ventura, California. Most likely, the creators of this character were driving north along the US 101 and saw the exit signs for Oxnard and Montalvo, an area in Ventura.
Toluca Lake ("Aaahh!!! Real Monsters")
Another B-movie actor who often accompanies Oxnard Montalvo as the damsel in distress. The name plays on the eponymous California city Toluca Lake.
El Grapadura ("The Stapler")
The beavers' (especially Daggett's) favorite vale tudo/lucha libre wrestler, introduced in Kandid Kreatures. Daggett has an autographed copy of his board game, "El Grapadura and Ladders" (an obvious reference to Snakes and Ladders).
Bill Licking
Presenter of TV shows and prototype of a touting salesman. He wears an impressive black wig. He was introduced in the episode Born to Be Beavers. Licking has often been known to manipulate Daggett and Norbert into being filmed for fraudulent documentaries. In his final appearance he is devoured alive by a bear, who then belches up his impressive wig.
Scientist #1 and Pit
"They are scientists, because they wear fancy white coats." They call the beavers "pointy weasels" and try to use them for very strange experiments. Scientist No.1 has a distinctive cleft chin and always wears sunglasses. He is just as arrogant as he is incapable. Since season 3 he has a name plate with a "1" on his coat. It is revealed in one episode that he never even went to college. Pete greatly resembles Mr. Burns from The Simpsons, and speaks only in an unintelligible mutter that Scientist No.1 apparently understands just fine. At one point, they wore green coats, making them environmentalists.
Truckee ( "True Trucker")
Truckee is a trucker shrew who thinks only about trucks and shrews, introduced in the episode "Tree of Hearts". Truckee hates Daggett and the feeling is mutual. In addition, he briefly dated Treeflower, causing animosity between him and Norbert.
Laverta Lutz
She's an overweight, red-neck woman and the "Lady of the Lanes". She first appeared in "Alley-Oops" as a repairwoman in a bowling alley before she was shot out through the alley's wiring. She has magic powers and usually tries to help out Daggett when he's in argument with Norb. She's notable for having a very loud and annoying cough. She only had three appearances.

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