Known best for providing the voice of Charlie Brown in the Peanuts films and television programs of the 1960s, this child actor also appeared in episodes of The Munsters, Get Smart, and F Troop. As the voice of Charlie Brown, he originated the character's famous "AAUGGGHH!!" shout.
He began his acting career at the age of seven. Two years later, he began voicing Charlie Brown.
In the mid 1990s, he hosted a radio talk show based in Palm Springs, California.
He was born and raised in the Los Angeles area. He had a stormy personal life and, in 2013, was allowed to substitute a drug treatment program for a year-long jail sentence.
He and Christopher Shea both contributed to the 1960s Charlie Brown animated films and television specials; Shea voiced the character of Linus.