Garfield and Friends (1988)

S07E15 The Beast From Beyond

After a dinosaur stirs from his slumber in modern times, he hatches a scheme to dominate humanity by transforming himself into a pink creature and launching a children’s television program reminiscent of Barney and Friends. Anyone who tunes in to watch Sidney the Pink Dinosaur ends up as a mindless follower, mimicking his every word. Garfield stands as the sole individual immune to this influence and must come up with a plan to rescue the world from Sidney’s brainwashing antics.