This is the only time in the show that Wonder Woman does her spinning transformation, a move invented by Lynda Carter for the Wonder Woman (1975) TV series.
The still-shot flashbacks of the Viking Prince were reproductions of comic artist Joe Kubert's original Viking Prince stories in the comic book "The Brave and the Bold".
When Green Arrow shoots an arrow-towline into Devil Ray's submarine, he hums along with the hero music that comes in the background.
The poem that Diana recites during the rite and J'onn's farewell is part of Samuel Taylor Coleridge's The Rime of the Ancient Mariner (specifically, the 13th to 17th stanzas of the final part).
The sub-plot with J'onn J'onzz was added when Wonder Woman became the main-focus character of this episode, which according to producer Bruce Timm wouldn't have occurred to the creative team with Aquaman at center stage.