Everett Clark was a voice actor best known for voicing the Grampy character in a number of 1935-1937 Betty Boop cartoon shorts.
Biography from Wikipedia, CC BY-SA. Credits and photos from TMDB.
The titles people know Everett from.
as Professor Grampy (voice, archive audio)

as Grandma (voice) (uncredited)

as Grampy (voice) (uncredited)

as Grampy (voice) (uncredited)
as Grampy (voice) (uncredited)

as Prof. Grampy (voice) (uncredited)
as Grampy (voice) (uncredited)
The people who keep turning up in Everett’s titles.