![From the cover of Flash Comics #81, January 1947](https://www.codedread.com/comicbooks/wp-content/uploads/2020/01/hawkman-and-neptune-perkins.png)
Neptune Perkins was a minor character introduced in the Hawkman story in Flash #66 (1945) as a sort of powered-down version of Aquaman. In Flash Comics #81, Neptune Perkins makes a re-appearance with Hawkman as they are both summoned to Venus where they pit a roc against a kraken to save the Venusians, or something.
Later, in the Modern era of comics, Neptune Perkins would be ret-conned and join the Young All-Stars.