He states in "Animaniacs Live" in the special features of Volume 1 of the DVDs that for Wakko Warner he did a John Lennon voice, then when he saw the picture of Wakko and how small he was, he changed the voice by making it more high pitched, like a small John Lennon.
Was the only voice actor to portray two characters in Transformers (2007). He was also the only voice actor to portray both an Autobot and a Decepticon in the film. He provided the voices for both, Ironhide and Barricade.
Harnell uses his impressionist skills as lead singer of the critically acclaimed worlds first pop/metal mash up band, "Rock Sugar". The band has had worldwide success playing for audiences as large as 100,000 at a time and opening for such legendary bands as AC/DC and Aerosmith.
Personal Quotes (1)
[on creating the voice of Wakko for Animaniacs (1993)] I at first did a John Lennon impression and then they showed me a picture and I saw that Wakko was kind of a little guy so I just made my voice a little smaller.