How Did This NOT Get Made Podcastさんのイラストまとめ

Catwoman's origin story was reimagined in Frank Miller and David Mazzucchelli's Batman: Year One (1987). This spurred a spin off that dove deeper into Catwoman's origin known as Catwoman: Her Sister's Keeper (1989) written by Mindy Newell.

Cat-Woman’s original costume. Back when her cowl was just a terrifying cat head.

Selina Kyle first appeared in 1940 in Batman #1. In this issue she was simply know as The Cat.

The Samurai Jack saga was nearly completed in 2013 with the comic series The Threads of Time written by Jim Zub. Tartakovsky did not consider the comics as canonical when he developed the 5th season.

Concept art for Who’s S-S-Scared? The title before Scooby-Doo Where Are You!

Alternative looks for Black Panther by J S Marantz. I'm seeing a lot of Batman inspiration in these versions.

In 1976 the Mael brothers nearly collaborated with French filmmaker Jacques Tati. They even wrote a song, under the same title as the film, that would've been feature in "Confusion".

Kate Blake, the added protagonist for the unmade Treasure Planet 2.

Some of the potential ship designs for the unmade Treasure Planet 2

Concept art for the unmade Treasure Planet 2 illustrated by Yarrow Cheney