Yogi Bear by his constant companion Boo-Boo Bear, would often try to steal picnic baskets from campers in the park, much to the displeasure of Park Ranger Smith. Yogi's girlfriend, Cindy Bear, sometimes appeared and usually disapproved of Yogi's antics. Besides often speaking in rhyme, Yogi Bear had a number of catchphrases, including his pet name for picnic baskets ("pic-a-nic baskets") and his favorite self-promotion ("I'm smarter than the av-er-age bear!"), although he often overestimates his own cleverness. Another characteristic of Yogi was his deep and silly voice. He often greets the ranger with a cordial, "Hello, Mr. Ranger, sir!" and "Hey
Yogi Bear television film "Yogi and the Invasion of the Space Bears". After Butler's death, Greg Burson stepped in to perform the role (Butler had taught Burson personally how to voice Yogi as well as his other characters). Greg Burson died in 2008. Jeff Bergman and Billy West also performed the character throughout the 1990s and early 2000s for various Cartoon Network commercials and bumpers. In the "Yogi Bear" film, the character is voiced by actor Dan Aykroyd. In the animated stop motion sketch comedy show "Robot Chicken" created by Seth Green, Dan Milano voiced Yogi Bear. Scott Innes performed the voice