Eclipse Owl was the name Dan (Nite Owl II) took up in Volume 3, while attempting to better master his new fighting abilities. However, by the end of Volume 3, Hollis Mason's (Nite Owl I) evil twin brother Blick Mason takes up the name Nite Owl and proceeds to go on a crime spree. After the death of Robert, Dan's sidekick, he decides to once again take up the mantle of Nite Owl to protect his former mentor's good name.