The Hanna-Barbera New Cartoon Series

Season 1, Episode 79

Episode Title: Gosh Zilla

Air Date: 1963-03-04

Overview:

Mr. Twiddle gives Wally some vitamin pills, but the pills actually make Wally grow to hundreds of feet tall! Wandering around town, Wally is taken for a prehistoric monster. Due to his resemblance to famous movie monsters, a Hollywood director is soon chasing after Wally with cameras!