Codename: Kids Next Door was a popular Cartoon Network series that lasted six seasons. In an e-mail sent to a fan, Mr. Warburton said that the original 7-minute pilot, No P in the Ool, originally had another voice actor for Numbuh 1.  It is now forgotten who this person was. It was decided that although the kid was good on the audition, he wouldn't work for the series. The creators went to voice actor legend Tom Kenny but he sounded "too old". Eventually they got Ben Diskin who was already on board voicing Numbuh 2 to do Numbuh 1 as well. It is unknown if a Tom Kenny demo reel and the original recording of the first kid still exists.