Costume designer Colleen Atwood, who created the stylized Superman costumes for the discussed film, also designed the Supergirl costume for Supergirl (2015).
Kevin Smith directed some Supergirl (2015) Season 2 episodes, the first titled Supergirl Lives (2017) in reference to the canceled film. Smith joked he expected Supergirl to fight a giant spider as in the infamous battle scene proposed for this movie.
The Flash (2023) brings Nicolas Cage's portrayal of Superman into canonicity as an alternate reality. Its infamous "giant spider" sequence also comes to fruition in the movie. It was created from the very storyboards proposed for "Superman Lives".