Additional Voices is a fictional character portrayed by Robert Knepper in the TV series Phineas and Ferb.
In the first episode they appeared in, titled The Lizard Whisperer/Robot Rodeo (season 2), they were 50 years old.
They appear in 1 episodes out of a total of 130 aired
Additional Voices is also portrayed by Clancy Brown, Lacey Chabert, Jennifer Grey, Matthew Lillard, D.B. Sweeney, Jim Meskimen, Emmanuelle Chriqui, Jane Leeves, Lisa Ling and Danica McKellar.
Episodes1
The Lizard Whisperer/Robot Rodeo
episode S2.E27 march 2010Ferb befriends a chameleon that grows to gigantic proportions.
