He provided the voice of Maurice, Belle's father, in the 1991 musical animated Disney film, Beauty and the Beast.

Everhart performed in numerous roles on Broadway including 1776, Chicago, Woman of the Year and the revival of Anything Goes.

Reviewing the Shakespeare Theater's production of The Comedy of Errors in The New York Times in 1963, Howard Taubman wrote, "Rex Everhart handles the two Dromios with unfailing comic gusto."

And in 1964, reviewing Much Ado About Nothing, Taubman said that as the constable Dogberry, Everhart "somehow pries a grin out of us even when we know every simple-minded joke that is coming."

In 1978, Everhart was nominated for a Featured Actor Tony Award for his role in the musical, Working.

The actor's television career, which started back in days of live broadcasting, included series, plays, films, soap operas and commercials.