Matthew Lilard
Don Messick
Casey Kasem
Radio personality/Rock music historian/actor/voice over artist Casey Kasem provided the voice of Shaggy in the Scooby-Doo animated series.
Hanna Barbera created the show Scooby-Doo and Matthew Lillard is the voice of Shaggy so Hanna Barbera created the show and Matthew Lillard did the voice of Shaggy. If there was no Matthew Lillard and no one else did Shaggy then Shaggy would not be in Scooby-Doo.
I believe it's because his voice started to sound too old.
Casey Kasem was the voice of Shaggy back in the day. Matthew Lillard, who really seemed to be channeling Casey, played Shaggy in the movies. The list of actors to voice Norville 'Shaggy' Rogers is as follows- Casey Kasem (1969-1997) Billy West (1998) Scott Innes (1999-2002) Casey Kasem (2002-2009) Scott Menville (2005-2008) (for Shaggy and Scooby Get a Clue only) Matthew Lillard (2010- ) (for Mystery Incorporated) Casey Kasem has retired from the role and Lillard is likely to be the sole voice actor if any other shows or TV movies are made for the time being.
Many have played him. IMDB will help you find the answer you are looking for.
Tim Allen plays the person who gets bit by the "shaggy dog"
The voices of one of the Scooby Doo cast this being the "Scooby Doo, Where Are You!" cast would include ones such as Don Messick who had done the voice of the main titled character of Scooby Doo, Casey Kasem who provided the voice of Shaggy, Frank Welker who did the voice of Fred Jones, Stefanianna Christopherson who did the voice of Daphne but only for the first season, Heather North who did the voice of Daphne Blake for the second and third seasons, Nicole Jaffe who did the voice of Velma Dinkley for the first and second seasons and Pat Stevens who had done the voice of Velmma Dinkley but only for the third season.
Tim Allen plays the male lead in the 2006 remake of The Shaggy Dog.
His name is Lee Feiner
casey kasem /Shaggy is a fictional character from the animated television series Scooby-Doo, about the adventures of four crime-solving teenagers and Shaggy's pet great dane, Scooby-Doo. Shaggy was originally voiced by Casey Kasem, who continued in the role for twenty-eight years.