| Boo-Boo Bear | 
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| First appearance | Yogi Bear's Big Break (1958) | 
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| Created by |  | 
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| Voiced by | 
Don Messick (1958–1996)
Jack Mercer (Movie Wheels Present Huckleberry Hound and Yogi Bear (1960))
Frank Milano (Songs of Yogi Bear and his Pals LP (1961), A Hap-Hap-Happy Christmas from Yogi Bear (1961), How to Be a Better-Than-the Average Child Without Really Trying! (1962), Hey There, It's Yogi Bear! LP (1964))
Ernest Newton (singing voice in Hey There, It's Yogi Bear!)
June Foray (Yogi Bear and Boo Boo Tell Stories of Little Red Riding Hood and Jack and the Beanstalk LP (1965))Chuck McCann (Wake Up, America! LP  (1965))Daws Butler (1973–1983; "Hear-See-Do" Hanna-Barbera Record of Safety, Macy's Thanksgiving Day Parade (animated segments))Keith Scott (Pauls commercial)Tony Pope (This Land is Our Land: The Yogi Bear Environmental Album)Billy West (1993–1999; Cartoon Network bumpers)Jeff Bergman (1997–2002, 2021–present; Cartoon Network bumpers, Lullabye-Bye Bear, When Bears Attack, GEICO commercial)Greg Burson (PrimeStar commercial)John Kricfalusi (Boo Boo Runs Wild, A Day in the Life of Ranger Smith, Boo Boo and the Man)Tom Kenny (1998–2004; I Am Weasel; Fruity Pebbles commercial; Harvey Birdman, Attorney at Law; The Grim Adventures of Billy & Mandy)Victor Yerrid (Robot Chicken)Scott Innes (At Picnic, Forest, Honey Lesson)Justin Timberlake (2010 film)Tom Virtue (Yogi Bear: The Video Game)Seth Green (Robot Chicken)Chris Cox (Mad)Eric Bauza (Quicken Loans commercial, 2020-present)
C. H. Greenblatt (Jellystone!; 2021–present)
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| Species | Brown bear | 
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| Gender | Male | 
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| Significant others |  | 
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Boo-Boo Bear is a Hanna-Barbera cartoon character on The Yogi Bear Show. Boo-Boo is a shorter anthropomorphic bear who wears a blue bowtie. Boo-Boo is Yogi Bear's constant companion (not his son, as sometimes believed), and often acts as his conscience. He tries (usually unsuccessfully) to keep Yogi from doing things he should not do, and also to keep Yogi from getting into trouble with Ranger Smith – often saying, "Mr. Ranger isn't gonna like this, Yogi." It is not readily apparent whether Boo-Boo is a juvenile bear with a precocious intellect, or simply an adult bear who is short of stature.