He works as a science teacher at Porko Junior High School and arrives at Sesame Street when he takes a wrong turn. He educates the local populace about the uses and properties of air.
His demonstrations are fueled by his strong ability to huff and puff. He claims to be a distant relative of noted huffer and puffer, the Big Bad Wolf, though Herb says he is instead known as "the Big Good Wolf." His mode of transportation is the Wolfmobile, a wooden craft that moves when he huffs and puffs into its sail. For his departure from Sesame Street, he recruits Mr. Snuffleupagus's strong blowing ability to propel him away.