Role in the film
He is first seen at the royal concert, announcing the arrival of the court composer, Sebastian. Later, he is seen telling Sebastian that King Triton wants to speak to him about Ariel's lovestruck behavior, causing Sebastian to mistakenly think that he knows that Ariel is in love with a human, which in turn causes him to accidentally blurt out the secret, and anger Triton enough that he destroys Ariel's secret grotto. He is last seen when Triton has ordered a search for his daughter, and Sebastian asks him if any traces of them have been found. He answers no, and is ordered to keep looking for them.
Herald also appears in the TV series of The Little Mermaid and the sequel. From the series, he is seen reading the scrolls.